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10 Ways To Celebrate International Pi Day

timothy posted about a year ago | from the meteor-tail-pink dept.

Math 180

We'd like to wish you a happy Pi Day. It may be just as arbitrary as some other holidays (though perhaps easier to schedule than some), but any excuse for some delicious food is one I'll take. Reader alphadogg writes with a few suggestions of ways to take part in this convenient celebration of both rationality and irrationality. (And lead your comment with the number of digits you can recite offhand ...)

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180 comments

Party! (5, Insightful)

bidule (173941) | about a year ago | (#43171321)

Go to bed at 3:08:30 AM, not 3:14:16 as heretics would do.

Re:Party! (1)

Anonymous Coward | about a year ago | (#43171973)

Pi day doesn't come for another two years. Pi isn't 3.1413, you know.

Re:Party! (1)

Anonymous Coward | about a year ago | (#43172955)

Pi day already happened over four hundred years ago. It was on March 14, 1592, you know.

Re:Party! (1)

icensnow (932196) | about a year ago | (#43173295)

Considering where any mathematicians who used this calendar were at the time, I suggest that it was actually 31 April 1592.

3.1415926 (1)

Anonymous Coward | about a year ago | (#43171325)

that's all I got ...

Celebrate Pi (4, Funny)

fustakrakich (1673220) | about a year ago | (#43171363)

Put a tiger in your tank

I prefer tau day (4, Insightful)

Bob the Super Hamste (1152367) | about a year ago | (#43171371)

I prefer tau day as it gives me an excuse to get 2 pies instead of just one.

For the record I only know pi out to 5 significant digits 3.14159

Re:I prefer tau day (2)

mike.mondy (524326) | about a year ago | (#43171717)

I prefer tau day as it gives me an excuse to get 2 pies instead of just one.

For the record I only know pi out to 5 significant digits 3.14159

Fourteen digits are given by a mnemonic I learned in grade school:

How I wish I could recollect of circle round the exact relation Archimede(s) unwound.

Just count the letters in each word.

Re:I prefer tau day (3, Insightful)

iapetus (24050) | about a year ago | (#43171765)

I wish I could determine pi
"Eureka!" cried the great inventor.
Christmas pudding, Christmas pie
To the problem's very center.

Twenty digits (omitting the 3, which everyone can remember anyway), and I find it very memorable.

Re:I prefer tau day (0)

Anonymous Coward | about a year ago | (#43172183)

omitting the 3, which everyone can remember anyway

Just name it 'Pie', and there you have your starting 3 :)

Re:I prefer tau day (0)

Anonymous Coward | about a year ago | (#43172805)

How I want a drink--alcoholic of course--after the heavy courses involving quantum mechanics!

Re:I prefer tau day (0)

Anonymous Coward | about a year ago | (#43172879)

Oops! Supposed to be "lectures" instead of "courses".

Re:I prefer tau day (1)

tehcyder (746570) | about a year ago | (#43172875)

By the time you've memorised the not-exactly memorable mnemonic, made a mental note about the (s) and learned how to translate the number of letters in a word into a number instantaneously [*] (and so on) you might as well just learn the actual digits by heart. A 14 long sequence of numbers is really not that hard to remember, it's not like you're going to have thousands of other irrational numbers to remember.

[*] You're going to look pretty stupid if you have to write the thing out and count the letters with your finger...

Re:I prefer tau day (1)

sosume (680416) | about a year ago | (#43171937)

My favorite is 'steak and blowjob day' .. which is, coincidentally, today..

Re:I prefer tau day (1)

Archangel Michael (180766) | about a year ago | (#43172257)

Happy Birthday!

Re:I prefer tau day (1)

lbmouse (473316) | about a year ago | (#43172319)

It is also Nation Potato Chip day. Trifecta!

Re:I prefer tau day (0)

Anonymous Coward | about a year ago | (#43172431)

3.1415926535897923284626433...

That's all I can remember.

For the guys that did more than a trillion digits on some serious PC (or super PC) based hardware see this

http://www.numberworld.org/misc_runs/pi-10t/details.html

I know the whooole thing (5, Funny)

wonkey_monkey (2592601) | about a year ago | (#43171377)

I can recite all the digits of pi - just not necessarily in the right order.

Re:I know the whooole thing (4, Informative)

interkin3tic (1469267) | about a year ago | (#43172277)

I can recite all the digits of pi, but only in Indiana: 3.2 [wikipedia.org] .

Re:I know the whooole thing (0)

Anonymous Coward | about a year ago | (#43172845)

0, 1, 2, 3, 4, 5, 6, 7, 8, 9. Duh.

Get stuffed on delicious raspberry pies :-) (1)

ArsenneLupin (766289) | about a year ago | (#43171399)

(n/t)

Re:Get stuffed on delicious raspberry pies :-) (1)

drosboro (1046516) | about a year ago | (#43172585)

Just finished teaching my pre-calculus class we've made kind of a week out of it a bunch of students were going away for Spring Break a little early, so we had several pies (coconut cream and strawberry rhubarb were among the standouts) on Tuesday then we went back to it today with a couple of apple pies for the few kids I've got left :)

Now if only there could be a mathematical constant called "poutine", I'd really be set.

Real PI day (1)

Anonymous Coward | about a year ago | (#43171415)

The real PI day is on 2015.
3.14.15 to be exact.

Re:Real PI day (3, Funny)

PPH (736903) | about a year ago | (#43171465)

22/7

Re:Real PI day (4, Funny)

Anonymous Coward | about a year ago | (#43171619)

not exactly

Summer solstice (0)

Anonymous Coward | about a year ago | (#43171885)

If the date is expressed in radians.

Re:Real PI day (1)

Anonymous Coward | about a year ago | (#43172451)

Actually, the realy Pi day was in 1592

3.14.1592

Best way (1)

Hsien-Ko (1090623) | about a year ago | (#43171423)

Watch Life of Pi, starting it at 3:14PM, while eating pie.

Re:Best way (1)

Anonymous Coward | about a year ago | (#43171523)

Shouldn't you start at 1:59 pm?

Re:Best way (1)

slinches (1540051) | about a year ago | (#43171707)

Or you can watch Pi [imdb.com] , which actually has some math in it. (okay, so it's more numerology than actual math, but at least there's numbers in there).

Re:Best way (1)

wile_e_wonka (934864) | about a year ago | (#43171997)

Seriously--that movie annoyed me very much. My wife was like "you'll like this movie because it's about math." Which turned out to be false. (my expectations were apparently unreasonably high)

Correct (0)

Anonymous Coward | about a year ago | (#43172297)

The movie was not about math. The main character was a fictitious mathematician, but the show was actually about his neurological disorders and involvement with a religious group and a criminal group.

Your wife simply didn't understand the movie. If she had understood it, she might not have misguided your expectations.

I thought it was a good movie on its own merits, but I never expected it to be about math.

Donald Duck in Mathmagic Land (1)

ShanghaiBill (739463) | about a year ago | (#43172723)

Seriously--that movie annoyed me very much.

For a far better movie about math, watch Donald Duck in Mathmagic Land [youtube.com] . When I was in 4th grade, my teacher was sick, so the substitute show that film to the class. I learned more from Donald Duck than I learned in the whole rest of the year. I saw that math could be fun and entertaining, and not just drills and word problems. To this day, I still remember the Golden Ratio, and the Fibonacci Sequence, and how they are related.

Re:Best way (1)

skywhale (664067) | about a year ago | (#43171753)

Watch Life of Pi streamed from a Raspberry Pi, starting it at 3:14PM, while eating pie.

Re:Best way (1)

leptechie (1937384) | about a year ago | (#43171755)

Make a chart to illustrate how much time you spent making pie and then eating it while watching Life of Pi, which started at 3.14pm, on International Pi Day

Oh, and I've always remembered 3.141592653589. My mother's phone number is a complete mystery...

not overly impressed with movie (1)

peter303 (12292) | about a year ago | (#43171769)

I found myself checking the time a lot. Perhaps it was the lack of dialog during the majority of the movie when there was just one human. Castaway had a similar problem.

I was shocked to hear Rhythm & Hues who got an effects Oscar for this movie had gone bankrupt. They had a real nice 25th anniversary presentation at 2012 SIGGRAPH.

My digits are all on-hand (1)

Doug Otto (2821601) | about a year ago | (#43171425)

Do I still need to recite them?

Samhain? (0)

Phrogman (80473) | about a year ago | (#43171433)

Why pick Samhain as being difficult to determine? Whats hard about Oct 31st-Nov 1st? Its celebrated as one day changes to the next (the start of the Celtic new year), and as far as I know never wavers. Its an old Pagan festival.

Easter on the other hand is calculated by some obscure and much more complex system ( http://en.wikipedia.org/wiki/Easter [wikipedia.org] ). Also an old Pagan festival suborned by Christianity quite possibly, but then thats true of a lot of them :P

Very odd choice for the summary, although as we all know the /. summary sometimes bears only a passing resemblance to the actual subject :P

Re:Samhain? (1)

Hey_bob (6104) | about a year ago | (#43171815)

Perhaps by "easier to schedule" Tim meant that with trick-or-treaters(kids) or various the costume parties, those of us celebrating Samhain have to figure out how to schedule around those things. :-) Cause, really.. I'm not going to be the one to tell the gf's kids that they can't go out in costume, because "your mommy and I want to go do ritual." :-P

Re:Samhain? (1)

aristotle-dude (626586) | about a year ago | (#43171895)

How is this relevant to the story? You might have a point about Halloween be co-opted and maybe if you had mentioned the date of christmas and some of the trappings of modern christmas but the content of the christmas festival celebrated by bible believing christians has nothing to do with the "yule". The church, in that case chose December 25th for its symbolism. It fit well with the idea that the christ child was the "light" coming into a world of darkness. The fact that the placement of the date could be used to snuff out the old pagan holidays was an added bonus.

Now as for "Easter", I followed that link and I found nothing there other than some objections by some groups suggesting it had pagan roots but the date is tied to the Jewish festival of Passover. That is biblically established. The only thing you could argue is that name "Easter" may have been co-opted by the church and some of the secular trappings resemble elements from pagan traditions that the church tried to stamp out but the festival within the church bares no relation to the old pagan celebration.

In the end, what's in a name? What actually counts is how you celebrate it and what it means to you.

PS. Christmas means "Christ" "mass" incase you did not see that. It is a celebration of the birth of christ.

Re:Samhain? (1)

Phrogman (80473) | about a year ago | (#43172463)

I am well aware of the meaning of Christmas, I am not that fucking stupid. Because its not the same day - or name - as Yule, I didn't mention it. Also it has a fixed date.
Easter on the otherhand does not have a fixed date. The only reasons I mentioned it is because Samhain has a fixed date, and Easter does not. I also jokingly mentioned it had been coopted solely because of the name Easter which might come from a European Pagan Horse goddess named Eostre and that made it a tad relevant.
My point was that Samhain was an idiotic festival to include as an example, and that Easter might have been a better and more logical choice.
You seem to have missed that though in your zeal to slam me over something I didn't say :P

Do not open until Xmas (1)

tepples (727027) | about a year ago | (#43173227)

the content of the christmas festival celebrated by bible believing christians has nothing to do with the "yule".

Then what's with the Christmas trees? (Jeremiah 10:1-5) And what's with the "do not open until Xmas" spirit of holding back of gift-giving in the months leading up to the date? Learn why one Christian denomination believes origins matter [jw.org] :

Maybe you feel that the origins of holidays have little to do with how they are celebrated today. Do origins really matter? Yes! To illustrate: Suppose you saw a piece of candy lying in the gutter. Would you pick up that candy and eat it? Of course not! That candy is unclean. Like that candy, holidays may seem sweet, but they have been picked up from unclean places. To take a stand for true worship, we need to have a viewpoint like that of the prophet Isaiah, who told true worshipers: "Touch nothing unclean."--Isaiah 52:11.

You wrote:

The only thing you could argue is that name "Easter" may have been co-opted by the church and some of the secular trappings resemble elements from pagan traditions that the church tried to stamp out but the festival within the church bares no relation to the old pagan celebration.

In what way are rabbits and eggs resurrection of the Christ? They're fertility symbols associated with Ishtar/Astarte/Eostre.

It is a celebration of the birth of christ.

For one thing, Jesus was probably born in the early fall; the Church chose the winter solstice out of a superstitious belief that he was conceived on the same day he died, and Yule was the closest holiday to nine months after Nisan 14. For another, did Jesus ever ask for his birth to be celebrated? Jesus was raised a Jew, and Jews were far more likely to celebrate a death anniversary [wikipedia.org] : "A name is better than good oil, and the day of death than the day of one’s being born." (Ecclesiastes 7:1) That's why Jehovah's Witnesses, for example, celebrate Good Friday on the eve of Nisan 14 but don't celebrate Christmas. Only two birthdays are ever mentioned in the Bible, and in both cases, the birthday boy had someone put to death as his gift.--Genesis 40:16-23; Mark 6:14-29.

I've written more about birthdays [pineight.com] and the commercialized holiday posing as Christmas [pineight.com] .

Where's the link... (0)

Anonymous Coward | about a year ago | (#43171443)

to the Three Stooges "pi" throwing episode with the well dressed guests?

*International* Pi day? (3, Informative)

Anonymous Coward | about a year ago | (#43171447)

I wasn't aware that Pi was now defined as 14.3

Re:*International* Pi day? (1)

sarysa (1089739) | about a year ago | (#43171549)

Then no pi(e) for you!

Re:*International* Pi day? (2)

sarysa (1089739) | about a year ago | (#43171581)

P.s. I prefer yyyymmdd as the standard and I'm still not poohpoohing this. I'm an atheist and I use xmas as a present day. People yearn for excuses to celebrate, so just roll with it.

The "do not open until Xmas" mentality (1)

tepples (727027) | about a year ago | (#43173263)

I'm an atheist and I use xmas as a present day.

I'm a Christian, and I don't really celebrate Christmas anymore. I prefer to give gifts when gifts are most needed rather than holding them back for several weeks.

Watch the life of Pi (0)

Anonymous Coward | about a year ago | (#43171449)

followed by Pi: Faith in Chaos. Have a Magnum PI marathon. Eat a slice of pie. Finish the day by giving my girlfriend a creampie.

What about 22/7? (1)

uncle slacky (1125953) | about a year ago | (#43171453)

July 22nd would seem to be a more accurate value for Pi day, shirley?

Re:What about 22/7? (0)

Anonymous Coward | about a year ago | (#43171587)

22/7 = 3.142857143
pi ~= 3.1415

I would say that 3.14 is closer to 3.142 than it is to 3.143

Therefore, 3.142 is a closer approximation than 22/7, and anyone using 22/7 for an approximation for pi, is in fact, an idiot.

Thank you.

Re:What about 22/7? (0)

Anonymous Coward | about a year ago | (#43172935)

What?

pi - 3.14 = .00159265...
22/7 - pi = .001264489...

Anyone rounding numbers before performing calculations on them is, in fact, an idiot.

Re:What about 22/7? (1)

Lithdren (605362) | about a year ago | (#43171641)

I'm celebrating pi every day I can... and stop calling me Shirley!

Pi Pi Pi (0)

Anonymous Coward | about a year ago | (#43171467)

I can use Pi correctly in a sentence.

3.1415926535 (0)

gQuigs (913879) | about a year ago | (#43171471)

I'm out of practice... was "playing" https://developer.palm.com/appredirect/?packageid=de.komola.pi [palm.com]

Re:3.14159265358979323846264338327950288 (1)

srmalloy (263556) | about a year ago | (#43173117)

I memorized pi out to 35 digits back in high school; I wasn't as interested in e, which I only memorized as 2.71828182845904523536

Eating pie! (3, Interesting)

Zaatxe (939368) | about a year ago | (#43171475)

That's the only way! ONLY WAY!

*NATIONAL* pi day (5, Insightful)

ljw1004 (764174) | about a year ago | (#43171485)

This can't be an "International" pi day. It's a US-specific pi day (Month-Day-Year). It might also extend to Japan and ISO8601 (Year-Month-Day).

Little-endian (Day-Month-Year) is common to the vast majority of the world's countries. And 3-14 doesn't exist.

Re:*NATIONAL* pi day (2, Interesting)

Anonymous Coward | about a year ago | (#43171649)

Every coder should write the date in the yyyymmddhhnnss format (which would give you 03-14) simply because it sorts properly.

Re:*NATIONAL* pi day (1)

TeknoHog (164938) | about a year ago | (#43171977)

Also, no matter how you write it, consider the significant figures. 3 is the most significant figure in both 3.14 and 14th of March.

However, the problem with this logic is that it's less than 3 months since the beginning of the year, while pi is more than 3 after zero....

Re:*NATIONAL* pi day (0)

Anonymous Coward | about a year ago | (#43171689)

International would obviously be according the date format set forth by the Internation Standards Organization, Hence, 3-14 does indeed exist for both inside and outside of the US.

Re:*NATIONAL* pi day (0)

Anonymous Coward | about a year ago | (#43171711)

Ever considered what the I in ISO 8601 stands for.

Re:*NATIONAL* pi day (4, Insightful)

martica (20295) | about a year ago | (#43171747)

"International" means "national" in the US. They assume that anything that applies to them, applies to everyone else, and if it doesn't, it doesn't for a reason that doesn't concern them, being as they are clearly foreigners and are just being different for the sake of being different.

Re:*NATIONAL* pi day (0)

Anonymous Coward | about a year ago | (#43172039)

USA actually helps us teaching it.

The concepts of 'inches', 'miles' and 'pounds' with all those funny digits, when described in metric system, makes it, next year in school, a lot easier to grasp the concept of 'PI'. It's just a ratio, after all.

Re:*NATIONAL* pi day (0)

Anonymous Coward | about a year ago | (#43172019)

22/7 is the international pi day as far as I know.

Re:*NATIONAL* pi day (1)

steelfood (895457) | about a year ago | (#43172273)

Pi Day only can exist in one calendar format. And that is precisely why it's international. If it could exist in multiple formats, everybody else would have their own Pi Day. But since there's only one, everbody gets to either celebrate it on the same day, or not have a Pi Day at all.

Works in China! (0)

Anonymous Coward | about a year ago | (#43172369)

Today's date: 2013314

Re:*NATIONAL* pi day (1)

Reaper9889 (602058) | about a year ago | (#43172563)

I think some uses 21/7 (It is even a better approximation than 3.14). Wikipedia calls it Pi Approximation Day.

Re:*NATIONAL* pi day (1)

Reaper9889 (602058) | about a year ago | (#43172577)

Well, just a test: clearly it should be 22/7

Uhm... (0)

Anonymous Coward | about a year ago | (#43171529)

The date notation here would be 14/3/2013, which makes this not pi day. And seeing that 31/4 doesn't exist, we'll never have pi day.

Re:Uhm... (1)

minogully (1855264) | about a year ago | (#43172631)

The date notation you use isn't the date notation everyone uses. Also, using the slash as a separator with the year at the end, can be ambiguous on its own, since it can mean dd/mm/yyyy or mm/dd/yyyy, depending on your region. Therefore, you shouldn't base the date of the holiday on date notation. Instead, it makes the most sense to match up larger quantifier in the date with the larger quantifier in the number, so month=3, day=14.

That said, it's just an excuse to make a day more fun. So, if it makes you happier to argue that it shouldn't happen, then it's fulfilling its purpose anyway!

Pi is wrong (2)

MetalliQaZ (539913) | about a year ago | (#43171531)

Tau Day [tauday.com]

Re:Pi is wrong (1)

readin (838620) | about a year ago | (#43172075)

Tau Day [tauday.com]

That would be April 2, right?

Oh? Sorry, I thought you said "towell day".

Pie Party (1)

ossuary (1532467) | about a year ago | (#43171577)

People from my work bring various kinds of pies from home and we have a sampling at 3:14 in the afternoon. Corny, but tasty! My favorite are the small fried apple pies. Yuuuummmmmmm.

Repeat that please? (1)

Tablizer (95088) | about a year ago | (#43171617)

"Oh, thought it was 'pee' day. Silly me. Really sorry about your shoes, ma'am."

integer ratio (1)

Skapare (16644) | about a year ago | (#43171621)

To celebrate Pi day, try performing this division:

4427007044615115050034854648525685871587 / 1409160108506276783085718440252375099653

Re:integer ratio (0)

Anonymous Coward | about a year ago | (#43171825)

Nice: using bc, that's almost exact to 50 digits:

(4*a(1))-(4427007044615115050034854648525685871587 / 1409160108506276783085718440252375099653)
-.00000000000000000000000000000000000000000000000002

Party like it's 636.6! (0)

Anonymous Coward | about a year ago | (#43171647)

3.141592653589793238462643383279502884
I memorized it for bonus marks on a math exam many years ago, and I haven't been able to kick it out since. is sticky!
Since it's the ratio of a circle's radius to circumference, I propose we pay hommage to the Benz logo, or Pacman. Or keep it simple and bow your head before the celestial orb of your choosing.

Circle the square (1)

c0lo (1497653) | about a year ago | (#43171671)

Squaring the circle was demonstrated impossible 131 years ago... all you can do now is to walk around the square.

Re:Circle the square (1)

magarity (164372) | about a year ago | (#43172771)

Squaring the circle was demonstrated impossible 131 years ago... all you can do now is to walk around the square.

Pie aren't square. Pie are round.

3.14159265357898 (0)

Anonymous Coward | about a year ago | (#43171719)

15 digits; going to the store soon to get a nice fresh (maybe even still warm!) apple pie!

pi = what? (0)

Anonymous Coward | about a year ago | (#43171721)

Pi = 1.3032013????

Even the state of Indiana was closer than that.

Pizza! (1)

chocapix (1595613) | about a year ago | (#43171833)

Just remind everyone that the volume of a pizza of radius z and thickness a is pi z z a.

Why SETI Failed (2)

camperdave (969942) | about a year ago | (#43171873)

Do you recognize this famous number?: 1.3591409142295226176801437356763...

That's right. It's e/2. Why e/2, you ask? Well, let me ask a similar question. Why celebrate Tau/2?

A circle is the locus of all points equidistant from a single point. Circles are defined by their radius. The natural circle constant is the relationship between the length of the radius and the circumference of the circle: Tau. No alien culture is going to be beaming 3.14159... into space. They will be sending 6.28318...

It's no wonder aliens don't want to contact us. We can't do basic math. We must be the laughing stock of the galaxy.

Re:Why SETI Failed (1)

TheSpoom (715771) | about a year ago | (#43173077)

Excuse me, aliens haven't contacted us yet because we don't yet have warp technology, so they're prevented by the Prime Directive.

And you call yourself a geek.

not pi day (0)

Anonymous Coward | about a year ago | (#43172089)

Everyone knows that today is Steak and BJ Day.

Re:not pi day (1)

Impy the Impiuos Imp (442658) | about a year ago | (#43172929)

The only people who celebrate Steak&BJ Day are those who are too dumb to know it's Pi Day.

Wait for it.

Keep thinking...

fuck3r (-1)

Anonymous Coward | about a year ago | (#43172229)

3.141595658979 (1)

show me altoids (1183399) | about a year ago | (#43172295)

That's as far as I can go. We have a pizzeria named Pi in St. Louis (it's famous because President Obama had one delivered to the White House) and they are running specials today.

Re:3.141595658979 (0)

Anonymous Coward | about a year ago | (#43172459)

3.141592658979

"International" Pi Day (0)

Anonymous Coward | about a year ago | (#43172301)

How the hell is the 14th of March Pi day? 1403? 0314? 20130314? 14032013? Nope, not working for me.

Is this like the "World" Series?

Re:"International" Pi Day (0)

Anonymous Coward | about a year ago | (#43172435)

We do this just so you eurofucks can get your displaced anger exercise for the day.

Why just today? (1)

327 (147814) | about a year ago | (#43172327)

Pi is constant.

International? (1)

betso.net (950024) | about a year ago | (#43172511)

Being an American, I feel ashamed by the ignorance a lot of Americans show despite of their pretensions to be (oh-so-cool-)"geeks". The "Month-Day-Year" format is used almost exclusively in the US. And this is basic knowledge! How should this day be then an "International" Pi day? How is it possible for this to make it to the Slashdot index without being corrected??

Re:International? (1)

Anonymous Coward | about a year ago | (#43172789)

No mixed-endian dates for me, and most-significant first, please. I don't care how wrong the world is.

As for Pi Day, as a subset of an ISO 8601 date, it's as international as they come, but you already knew that. (Why the vitriol? Did a clown throw a pie in your face years ago?)

practical applications? (1)

martyb (196687) | about a year ago | (#43172757)

FWIW, as requested: 120 digits (was 200 at one time, in competition with a dormmate in college. Hi Rob!)

That experience lead me to question how many digits are useful? Of course, that depends on how you define useful. Computer burn-in testing, theory of algorithms and optimizations thereof notwithstanding, I was thinking more along the lines of physical applications.

Question:What is the largest circular body that I could conceivable try to calculate the circumference of, and what is the finest measurable precision with which I could imagine measuring that with?

Circular body: observable universe [wikipedia.org] : approximately 8.8x10^26m in diameter.

Minimal length: Planck Length [wikipedia.org] : approximately 1.616x10^-35m.

Answer: Let's ask Wolfram Alpha to compute and confirm that for us using: http://www.wolframalpha.com/input/?i=convert+diameter+of+the+observable+universe+to+planck+lengths [wolframalpha.com] which produces a result of: 5.4x10^61.

Conclusion: *IF* we could measure the diameter of the universe to within +/- one Planck length, then, within significant digits of accuracy, we would need no more than 61 digits of Pi to compute its circumference.

If you've followed this far, I now have a question for you: what is the largest actual number of digits of i you have actually seen needed and in what context?

Stupidity (0)

Anonymous Coward | about a year ago | (#43172873)

So, we have came down to have international days for numbers...wonderful.

Two's Day (1)

seven of five (578993) | about a year ago | (#43172931)

Ratio of circle's diameter to its radius. Yipee.

F(AILZORS (-1)

Anonymous Coward | about a year ago | (#43172981)

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