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Factorial Calculator
Factorial Formula: Factorial of n = The product of all positive integers less than or equal to n

Factorial Definition
The Factorial Calculator makes it easy to find the factorial of a number. Enter in the number that you want to find the factorial for and then press the calculate button. The definition of a factorial practically speaking is any number multiplied by every real positive whole number less than itself. For example, 4! (the “!” represents the mathematical notation for factorial) would be 4 * 3 * 2 * 1 = 24 and 5! would be 5 * 4 * 3 * 2 * 1 = 120.

How to Calculate Factorial
Let's be honest - sometimes the best factorial calculator is the one that is easy to use and doesn't require us to even know what the factorial formula is in the first place! But if you want to know the exact formula for calculating factorial then please check out the "Formula" box above.
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