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Happy Pi Day!
Posted by Michael on 14 March 2005, 03:00 GMT

Happy Pi Day! That's right, the most sacred nerd holiday has returned: March 14th, affectionally known as Pi Day to millions of people around the world. Last year we didn't have enough material for a dedicated Pi Day article, but I've managed to collect a few things this time. First, some of you (sadly) may not have yet voraciously scoured the internet for all things pi, and perhaps have not yet seen the awesome Pi-Search Page. You can find the position of your telephone number, social security number, or other fun numeric sequence inside the first 100 million digits of pi.

On the more creative fronts, a few years ago I created a song based upon pi, titled "Lost in Pi Land." Each note (A-G#) corresponds to a particular digit 0-9. Those of you with perfect pitch can transcribe the notes and find out how many decimal places of pi are in the piece. I might just be extremely biased when I say this, but this would make excellent background music for all of your Pi Day parties.

Lastly, we will be having informal Coordinated Pi Shouts in #tcpa on EFNet at 1:59:26 PM in each time zone. If you are not sure of how to get on IRC, please read our IRC page. Remember folks, that's coordinated pi shouting every hour on the :59:26. Once again, have a happy Pi Day and we'll shout "Pi!" together on IRC every hour.

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Re: Happy Pi Day!
Coolv  Account Info
(Web Page)

PI IN MY TIMEZONE!!!

Actually pi+12 hours but who cares...

Reply to this comment    14 March 2005, 19:59 GMT


Re: Re: Happy Pi Day!
Coolv  Account Info
(Web Page)

Let's call it pi PM...

Reply to this comment    14 March 2005, 20:02 GMT


Re: Re: Re: Happy Pi Day!
Jake Griffin  Account Info
(Web Page)

How about piMP? ;)

Reply to this comment    16 March 2005, 06:23 GMT


Re: Re: Re: Re: Happy Pi Day!
mindstorm23 Account Info

How about not?

Reply to this comment    16 March 2005, 21:48 GMT

Re: Happy Pi Day!
Michael McElroy Account Info
(Web Page)

Blasphemy! Everyone knows that Mole Day is the most sacred nerd holiday!

Besides, PI=4! (obligatory.)

Reply to this comment    15 March 2005, 02:58 GMT

Re: Re: Happy Pi Day!
JcN  Account Info
(Web Page)

June 2nd, right? Shouldn't it be called Avogadro's Day? After all, 6.02E23 (number of particles per mole for the chemistry-challeneged people here) is Avogadro's Number...

Reply to this comment    15 March 2005, 03:27 GMT

Re: Re: Re: Happy Pi Day!
Me13579  Account Info

Actually, Mole Day is on October 23rd (10/23) from 6:02 AM to 6:02 PM - probably so that it is more likely to occur on a school day.

Reply to this comment    15 March 2005, 08:11 GMT


Re: Re: Re: Re: Happy Pi Day!
JcN  Account Info
(Web Page)

120d That makes sense.

Reply to this comment    15 March 2005, 17:19 GMT


Re: Re: Re: Happy Pi Day!
sportsman78  Account Info

that's a good point Avagadros day should be on June 2nd but then we would also have to have Fibbinochi day on January 12th (1,1,2,3,5,8,13,21), Light day on March 8th (3.08*10^23),...

Reply to this comment    19 March 2005, 02:11 GMT

Re: Re: Happy Pi Day!
Andy Janata  Account Info
(Web Page)

pi=24? Isn't that a bit TOO far off? ;)

Reply to this comment    15 March 2005, 15:07 GMT


Re: Re: Happy Pi Day!
Jake Griffin  Account Info
(Web Page)

Actually PI is about 2.44861811105! (where the "!" is a factorial)...

Reply to this comment    15 March 2005, 17:42 GMT

Re: Happy Pi Day!
Michael McElroy Account Info
(Web Page)

"The string 31415926 was found at position 50366472 counting from the first digit after the decimal point. The 3. is not counted."

That's as close as I could get to repeating pi in the first 2 million digits..

Reply to this comment    15 March 2005, 03:03 GMT


Re: Re: Happy Pi Day!
Andy Janata  Account Info
(Web Page)

The 3 doesn't count for it to be a repeating decimal.

Reply to this comment    15 March 2005, 15:08 GMT

Re: Re: Re: Happy Pi Day!
Jake Griffin  Account Info
(Web Page)

in fact, the 1415 doesn't even have to be....look at the fraction 1/300 in decimal format:
0.003333333... the first two zero's after the decimal don't contribute to the repeating...

Reply to this comment    15 March 2005, 17:45 GMT


Re: Re: Re: Happy Pi Day!
Michael McElroy Account Info
(Web Page)

Note I said repeating pi, not repeating pi's decimals.

Reply to this comment    16 March 2005, 05:26 GMT

Re: Happy Pi Day!
Travis Evans  Account Info

Shoot! I forgot totally about Pi day until 10 minutes before midnight on March 14. :-(

Well, I'm prepared for next time. My TI-89 has AMS 2.09 with the clock turned on, so I added a check and a reminder for Pi Day to the kbdprgm I use to launch GPShell. Since I do that at least once a day, I'm bound to remember this time. (It also wouldn't hurt to put reminders about Daylight Savings Time and automatically adjust the calc's clock.)

Now if I had just thought of that a year ago...

Reply to this comment    15 March 2005, 06:43 GMT

Re: Happy Pi Day!
Travis Evans  Account Info

I was surprised to find the string "12345678" at the 186557266th position of Pi.

"123456789" wasn't found, though.

Reply to this comment    15 March 2005, 06:45 GMT


Re: Re: Happy Pi Day!
Travis Evans  Account Info

Doesn't look like my social security number was found, either.

Reply to this comment    15 March 2005, 06:49 GMT


Re: Re: Re: Happy Pi Day!
Jake Griffin  Account Info
(Web Page)

"The string <my ss#> was found at position 31415926 counting from the first digit after the decimal point. The 3. is not counted."

8O

Reply to this comment    15 March 2005, 17:52 GMT

Re: Re: Re: Re: Happy Pi Day!
Jake Griffin  Account Info
(Web Page)

"The string 066879820 was found at position 31415926 counting from the first digit after the decimal point. The 3. is not counted."

Reply to this comment    15 March 2005, 17:53 GMT


Re: Re: Re: Re: Happy Pi Day!
no_one_2000_  Account Info
(Web Page)

No way! That's really the position of your SS# in pi? If so, you are officially the coolest person in the world!

Reply to this comment    16 March 2005, 02:25 GMT


Re: Re: Re: Re: Re: Happy Pi Day!
Jake Griffin  Account Info
(Web Page)

No, not really. I knew you'd be one of the people that thought it was cool ;)

Reply to this comment    16 March 2005, 06:24 GMT


Re: Re: Re: Re: Re: Re: Happy Pi Day!
burntfuse  Account Info
(Web Page)

Too bad. :-/ On the subject of significant numbers in pi, did you see where 424242 is found?

Reply to this comment    16 March 2005, 21:59 GMT

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