In mathematics, the factorial of a non-negative integer , denoted by , is the product of all positive integers less than or equal to . The factorial of also equals the product of with the next smaller …

Aug 1, 2025 · In mathematics, there are n! ways to arrange n objects in sequence. "The factorial n! gives the number of ways in which n objects can be permuted." [1] For example:

The factorial function (symbol: !) says to multiply all whole numbers from our chosen number down to 1. Examples:

Find the factorial of -1 as well how many trailing zeros and number of digits in -1 factorial by using our Factorial Calculator

Mar 7, 2025 · The factorial of a non-negative integer n, denoted by the symbol n! (read as ‘n factorial’), represents the product of all positive integers from 1 to n. n! = n × (n – 1) × (n – 2) × …

What is a factorial? A factorial of N is the product of all positive integers between 1 and N inclusive. For example, the factorial of 5 is 5×4×3×2×1=120. The one exception is 0!, which is …

Oct 16, 2025 · The factorial of a number is the product of all positive integers from that number down to 1. It plays a key role in many mathematical concepts, such as permutations, …

How to calculate the factorial of a number. Learn how to use this function: the factorial of n is the result of all the integer numbers up from 1 to n.

The factorial of n is denoted by n! and calculated by the product of integer numbers from 1 to n.

b! = b (b-1) (b-2)……… If you have a look at the implementation of the formula of the factorial calculator, it explains that the factorial of a number is a product of all the numbers that are less …