User:Σ/Testing facility/Factorial
< User:Σ | Testing facility
1
This template finds the factorial of a number. To use it, enter:
{{factorial|input}}
The input must be a positive integer smaller than 100 (better than most calculators, which go up to only 69). This template works by repeating conditional multiplications. Examples:
- {{factorial|2}} gives 2
- {{factorial|3}} gives 6
- {{factorial|5}} gives 120
- {{factorial|10}} gives 3628800
- {{factorial|80}} gives 2.4329020081766E+18
- {{factorial|0.5}} gives 1
(invalid input)
- {{factorial|-1}} gives
(invalid input)