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Happy Pi Day! Number Lovers Around The World Celebrate Pi (VIDEOS)

Mar 14, 2013 12:17 PM EDT

The details are in the digits today, Thursday, March 14. Put another way, today is for pi.

Math enthusiasts around the world are geeking out because today is Pi Day.

When numerically writing the date in month/day format, March 14 (3/14) closely resembles the first digits of the number pi, 3.14, which is the ratio of circumference to diameter of a circle.

Much ado has been made about the number pi, an irrational number that goes on to infinity with no repetition or pattern.

According to, pi has been calculated to more than one trillion digits beyond the decimal point.

"Pi's infinite nature makes it a fun challenge to memorize, and to computationally calculate more and more digits," the website states.

Some people have made a name for themselves by memorizing and reciting the digits of pi. Daniel Tammet set a record in 2004 for memorizing pi up to the 22,514 th digit, CNN reported.

He spent more than five hours reciting the digits before an audience, some of whom were so moved by the rendition that they cried.

"Many people around the world -- including me -- have been interested enough in this number, or in memorization itself, to see how many digits they can bank. Pi has infinitely many digits with no discernible pattern, yet it mathematically explains the shape of all circles. This makes memorizing it a difficult, yet somehow meaningful, challenge," said Tammet to CNN.

In 2009 The United States Congress supported a resolution that designates March 14 "Pi Day."

TED talk with Daniel Tammet.

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