Factorial (disambiguation)

The factorial of a number $$n$$ is $$n!=n\cdot(n-1)\cdot(n-2)\cdots$$, the product of positive integers up to $$n$$. Factorial may also refer to:


 * Factorial experiment, a statistical experiment over all combinations of values
 * Factorial code, data representation by independent components
 * Factorial (software company), supplier of human resources software