# 4.10: Factorials

- Page ID
- 2056

[ "article:topic", "authorname:tkuphaldt" ]

##### Definition of a factorial

Denoted by the symbol “!” after an integer; the product of that integer and all integers in descent to 1.

Example of a factorial:

- Page ID
- 2056

[ "article:topic", "authorname:tkuphaldt" ]

Denoted by the symbol “!” after an integer; the product of that integer and all integers in descent to 1.

Example of a factorial: