# Stirling's formula

[stur-lingz]

- a relation that approximates the value of n factorial (n!), expressed as .

## Origin of Stirling's formula^{}

1925–30; after James Stirling (died 1770), Scottish mathematician

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

# Stirling's formula

- a formula giving the approximate value of the factorial of a large number n, as n ! (n / e) n √(2π n)

## Word Origin

named after James Stirling (1692–1770), Scottish mathematician

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012