Pi (π) [aka Archimedes' constant] is a mathimatical constant that can be defined as the ratio of a circle’s circumference to its diameter.
Pi is an irrational number and therefore cannot be written as the ratio of two integers. It is also a transindental meaning there is no polynomial with integer (or rational) coefficients of which pi is a root.
The pi size record is 1.2 x 1012 (> 1,240,000,000,000) digits, obtained by Kanada and his team in December 2002.
Below are a sample of the digits of pi leading up to the 25 billionth.
3. 1415926535 8979323846 2643383279 5028841971 6939937510 : 50 5820974944 5923078164 0628620899 8628034825 3421170679 : 100 [...] 2448547079 5329693979 7145627081 9204187454 9483487803 : 24999999950 1309759846 5364560010 7388984278 8403481193 9913806533 : 25000000000
- Pi (π) calculated to 1 million places
- Archive of Pi (π) calculated to 10 million places [mirror] SHA1 MD5
- Archive of Pi (π) calculated to 100 million places [mirror] SHA1 MD5
- Statistics about the first 1.2 trillion digits of Pi [super-computing.org]
- Pi history [www-gap.dcs.st-and.ac.uk]
- PlanetMath: pi [planetmath.org]
- The open source project for calculating Pi. [sourceforge.net]
- Math Forum: Finding the Value of Pi [mathforum.org]