
Glossary: Prime Pages: Top 5000: 
Stirling found the following formula for approximating
factorials:
and more precisely, where 0 < < 1 (and e is the base of the natural logarithms). In terms of the gamma function Stirling's formula is and where B_{k} is the kth Bernoulli number.
References:
Chris K. Caldwell © 19992017 (all rights reserved)
