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 …

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

Mar 7, 2025 · What is a factorial in mathematics. Know its symbol, equation, rules, and properties. How to solve it. The factorial of 0, negative numbers, and decimals with examples.

Aug 1, 2025 · Factorial Calculator. Find the factorial n! of a number, including 0, up to 4 digits long. n! factorial calculator and examples. Free online factorial calculator.

Purplemath What are factorials? Factorials are very simple things; they're just products, and are indicated by an exclamation mark. For instance, "four factorial" is written as 4! and means the …

Factorial, in mathematics, the product of all positive integers less than or equal to a given positive integer and denoted by that integer and an exclamation point ...

Jul 23, 2025 · Your All-in-One Learning Portal: GeeksforGeeks is a comprehensive educational platform that empowers learners across domains-spanning computer science and programming, school …

The factorial of a whole number is the function that multiplies the number by every natural number below it. Symbolically, a factorial can be represented by using the symbol "!". This symbol lies on the same …

So, for example, . The notation was introduced by Christian Kramp (Kramp 1808; Cajori 1993, p. 72). An alternate notation for the factorial, sometimes known as Jarrett notation, was written (Jarrett 1830; …

Word History Etymology Adjective factor entry 1 + -ial (in mathematical sense after French factoriel) Noun borrowed from French factorielle, noun derivative from feminine of factoriel factorial entry 1