Factorial Calculator

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Factorial Calculator

Factorial: 120

Tool Overview: Factorial Calculator

How To Use the Factorial Calculator

This online factorial calculator is pretty simple. Enter the positive integer n that you want to generate the factorial for. Hit the calculate button. The result from the factorial calculator will be "factorial n", the product of every number less than or equal to that given number. These items are referred to as the factor of the number.

For example, the factorial value of 3! = 3 x 2 x 1 = 6. This factorial definition also happens to be useful in solving combinatorics problems related to the number of unique ways you can arrange three objects.

The factorial calculation of a given number is a common part of many combinatorics problem sets. You use it to find the permutation of n objects, which can be used to understand the probability of getting a result (includes a specific value). (I suspect most of you are visiting our math calculators / scientific calculator site to check problem sets)

What is the factorial formula?

The factorial formula states that for a non-negative integer n, denoted by n!, the factorial is the product of all positive integers less than or equal to n. (in this case, we give you an online calculator that handles this function behind the scenes). This is an exact value.

What is the gamma function?

The gamma function interpolates the factorial function to apply to non-integer values. This is part of college level mathematics (number theory / abstract algebra) as well as forming part of the theoretical basis for statistics.

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