product of all integers between 1 and the integral input of the function
FactorialReIm
In mathematics, the factorial of a non-negative integer ... {\displaystyle {\begin{aligned}n!&=n\times (n-1)\times (n-2)\times (n-3)\times \cdots \times 3\times 2\times 1\\&={\begin{cases}1,&{\text{if }}n=0\\n\times (n-1)!,&{\text{if }}n\geq 1.\end{cases}}\\\end{aligned}}} For example, ... ... โ€ฆ Wikipedia
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Wikipedia
en.wikipedia.org โ€บ wiki โ€บ Factorial
Factorial - Wikipedia
6 days ago - {\displaystyle 5!=5\times 4!=5\times 4\times 3\times 2\times 1=120.} The value of 0! is 1, according to the convention for an empty product. Factorials have been discovered in several ancient cultures, notably in Indian mathematics in the canonical works of Jain literature, and by Jewish mystics in the Talmudic book Sefer Yetzirah.
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Wikimedia
wikimedia.org โ€บ api โ€บ rest_v1 โ€บ media โ€บ math โ€บ render โ€บ svg โ€บ 0693f9703ea7eefbfb95068bb81616b5ed5a0b7d svg
{\displaystyle {\begin{array}{rll}0!&:=1&\\1!&= ...
Use this page to experiment with the MediaWiki REST APIs. API calls made through the sandbox interface will interact with live wiki content and may modify the wiki. Refer to the API documentation for further details about API usage
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CalculatorSoup
calculatorsoup.com โ€บ calculators โ€บ discretemathematics โ€บ multifactorials.php
Multifactorial Calculator
Multifactorial Calculator. Find the factorial n!, double factorial n!!, triple factorial n!!!, etc, of a number, including 0, up to 4 digits long.
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Math is Fun
mathsisfun.com โ€บ numbers โ€บ factorial.html
Factorial Function !
We usually say (for example) 4! as "4 factorial", but some people say "4 shriek" or "4 bang".
Find elsewhere
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CalculatorSoup
calculatorsoup.com โ€บ calculators โ€บ discretemathematics โ€บ factorials.php
Factorial Calculator n!
A factorial is a function that multiplies a number by every number below it. For example 5!= 5*4*3*2*1=120.
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Quora
quora.com โ€บ What-is-4-Factorial-of-4
What is 4! (Factorial of 4)? - Quora
Answer (1 of 2): 4! of 4 factorial is 4 x 3 x 2 x 1 = 24. In general, n! = n x (n - 1) x (n - 2) x โ€ฆ.. x 3 x 2 x 1. 1! = 1, 2! = 2, 3! = 6, 4! = 24, 5! = 120, 6! = 720, 7! = 5040โ€ฆ etc. Also, remember 0! = 1.
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Encyclopedia Britannica
britannica.com โ€บ science โ€บ mathematics
Factorial | Definition, Symbol, & Facts | Britannica
6 days ago - 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. Thus, factorial seven is written 7!, meaning 1 ร— 2 ร— 3 ร— 4 ร— 5 ร— 6 ร— 7. ...
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ETH Zurich
people.math.ethz.ch โ€บ ~meier โ€บ teaching โ€บ anova โ€บ factorial-treatment-structure.html
4 Factorial Treatment Structure โ€“ ANOVA and Mixed Models
Think for example of a plant experiment using combinations of light exposure and fertilizer, with yield as response. We call this a factorial treatment structure or a factorial design. If we observe all possible combinations of the levels of two or more factors, we call them crossed. An illustration of two crossed factors can be found in Table 4.1.
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Purplemath
purplemath.com โ€บ modules โ€บ factorial.htm
What are factorials, and how do they work? | Purplemath
Factorials are very simple things; they're just products, and are indicated by an exclamation mark. For instance, "four factorial" is written as 4!
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Reddit
reddit.com โ€บ r/askmath โ€บ is it possible to produce the number for 4!!!!?
r/askmath on Reddit: Is it possible to produce the number for 4!!!!?
April 25, 2017 - It also depends on what the repeated ! symbols mean. According to Wolfram MathWorld it means multifactorial. In this case it would be the quadruple factorial of 4, which is just 4.
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Desmos
desmos.com โ€บ scientific
Desmos | Scientific Calculator
A beautiful, free online scientific calculator with advanced features for evaluating percentages, fractions, exponential functions, logarithms, trigonometry, statistics, and more.
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Quora
quora.com โ€บ What-is-the-factorial-of-4
What is the factorial of 4? - Quora
Answer (1 of 9): Import java.util.Scanner; Class Factorial { static int Fact(int n) { int fact=1; if(n==0) { return 1; } for(int i=1;i
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GeeksforGeeks
geeksforgeeks.org โ€บ dsa โ€บ program-for-factorial-of-a-number
Factorial of a Number - GeeksforGeeks
Note: Factorial of n is defined as n * (n -1) * (n - 2) * ... * 1, for n = 0, factorial is 1. Examples: Input: n = 5 Output: 120 Explanation: 5! = 5 * 4 * 3 * 2 * 1 = 120 ยท Input: n = 4 Output: 24 Explanation: 4!
Published ย  January 13, 2026
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Cuemath
cuemath.com โ€บ numbers โ€บ factorial
Factorial - Meaning, Formula | Factorial of Hundred & 0
The Factorial of a whole number 'n' is defined as the product of that number with every whole number less than or equal to 'n' till 1. For example, the factorial of 4 is 4 ร— 3 ร— 2 ร— 1, which is equal to 24. It is represented using the symbol '!' So, 24 is the value of 4!.
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BYJUS
byjus.com โ€บ maths โ€บ factorial
Factorial
That means, the factorial of 4 gives the required number of ways, i.e. 4! = 4 ร— 3 ร— 2 ร— 1 = 24.
Published ย  October 6, 2021
Views ย  1K
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AllMath
allmath.com โ€บ factorial.php
Factorial Calculator
Factorials are easy to calculate but their drawback is that they take time, as most of the math does. That is what makes the factorial calculator important and useful. Example: Solve: 6!, 4!, and 7! Solution: 6! = 6 x 5 x 4 x 3 x 2 x 1 ยท = 720 ...