Python math.factorial() Method

Python math Module

Python math.factorial(x)The method returns the factorial of x.

The parameter can only be a positive integer.

The factorial of a number is the product of all integers, for example, the factorial of 6 is: 6 x 5 x 4 x 3 x 2 x 1 = 720。

Syntax

The syntax of the math.factorial() method is as follows:

math.factorial(x)

Parameter description:

• x-- Required, positive integer. If the number is negative or not an integer, it returns ValueError. If the value is not a number, it returns TypeError.

Return Value

Returns a positive integer representing the factorial of the positive integer.

Example

The following example returns the factorial of a positive integer:

Output result:

362880
720
479001600

Python math Module