Factorial

Factorial[ n ] represents the factorial n!.

Usages

`Factorial[ n ]`

Factorial[ n ] represents the factorial of n and is displayed as n!. In a script, it is not calculated: use CalcFactorial or Simplify to get the value.

Example	in	rendered
The factorial of `5`.	`Factorial[ 5 ]`	$5!$
Brackets are added where needed.	`Factorial[ n+1 ]`	$\left(n+1\right)!$

Example	in	out
Calculate the value with `Simplify`.	`Simplify[ Factorial[5] ]`	`120`
Calculate the value with `CalcFactorial`.	`CalcFactorial[ 5 ]`	`120`