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Factorial

Tool for computing factorials. Factorial n! is the product of all integer numbers (not zero) inferior or equal to n, it is symbolized by an exclamation point juxtaposed after the number.

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Factorial -

Tag(s) : Arithmetics

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# Factorial

## Gamma Calculator Γ(N)

 Calculate Γ(N) Γ(N+1)

### What is a factorial? (Definition)

Factorial of a number $n$ is the product of the positive integers numbers (not null) less or equal to $n$.

The usual notation to indicate a factorial is the exclamation mark positioned after the number. The factorial of $n$ is noted $n!$.

### How to calculate a factorial?

Factorial is calculated with a multiplication

$$n!=\prod_{k=1}^n k = 1 \times 2 \times 3 \times \cdots \times n$$

Example: $$4! = 1 \times 2 \times 3 \times 4 = 24$$

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Factorial on dCode.fr [online website], retrieved on 2024-07-18, https://www.dcode.fr/factorial

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