# FACT

## Content

This function calculates the factorial of the specified number.

## Syntax

`FACT(number)`

## Arguments

[Required] The nonnegative number for which you want the factorial. If number is not an integer, it is truncated.

## Remarks

The factorial is the product of the positive integers less than or equal to a number and is calculated as 1 x 2 x 3 x . . . x *number*, and is typically written as n! for n being the number.
For example, 4! is 1 x 2 x 3 x 4, which is 24.
The argument must be a non-negative number. If you provide a number that is not an integer for the argument, the decimal portion of the number is ignored.

## Examples

`FACT(B3)`
`FACT(R1C2)`
`FACT(10)` gives the result 3628800