Syntax

factorial(number: number) :: number

Description

Get the factorial of a number. Getting the factorial of any number above 21 will return an approximation, not an exact value. Any number after 170 will always return Infinity. Should not be used to calculate permutations or combinations manually.

Examples

factorial(0) = 1
factorial(3) = 3*2*1 = 6
factorial(5) = 5*4*3*2*1 = 120
factorial(171) = Infinity