Have you ever heard the term ‘factorial’ and wondered what it is? Well, we are here to help you. In this article that how to find the Factorial of hundred, we will discuss what a factorial is and how can you calculate the factorial of 100, step by step.

First, we need to understand how to find the factorial of hundred. In mathematics, factorial is defined as:

**“The product of all the positive integers, equal or less than a given positive integer”**

Simply, a factorial is a product that we get by multiplying the given number with every number below it the factorial of 5 is 5×4×3×2×1, which is equal to 120.

Similarly, the factorial of 8 is 8×7×6×5×4×3×2×1, which gives us 40320.

**The factorial is denoted by the number with an exclamation sign next to it “****n!****”.** So, the factorial of 24 will be denoted by **24!**

Similarly, the factorial of 90 will be denoted by **90****!**

**History:**

Before understanding the concept of **how to find the Factorial of hundred**. Let’s have an example of the factorial of 7. The product of all positive integers less than or equal to a given positive integer, indicated by that integer plus an exclamation point, is known as factorial in mathematics. Factorial seven is thus written as 7! which equals 1 2 3 4 5 6 7. The factorial zero is equal to one. In the evaluation of permutations and combinations, as well as the coefficients of terms in binomial expansions, factorials are frequently encountered Nonintegral values have been included in factorials.

Jewish mystics discovered factorials in the Talmudic work Sefer Yetzirah, and Indian mathematicians discovered them in the canonical works of Jain literature. Numerous mathematical disciplines employ the factorial operation, but combinatorics uses it most frequently to count the number of various permutations of n different objects: there are n!. Factorials can be found in algebra, number theory, probability theory, computer science, and are used in power series for the exponential function and other functions in mathematical analysis.

The late 18th and early 19th centuries saw the development of much of the mathematics behind the factorial function. Stirling’s estimate accurately approximates the factorial of enormous numbers, proving that it expands more rapidly than exponentially. By describing the exponents of prime numbers in a prime factorization of the factorials, Legendre’s method can be used to calculate the number of trailing zeros in the factorials.

Daniel Bernoulli and Leonhard Euler interpolated the factorial function to a continuous complex number function, the gamma function, with the exception of the negative integers. Scientific calculators and software libraries employ factorial function implementations, which are widely used as illustrations of various computer programming techniques. It is inefficient to compute large factorials directly using the product formula or recurrence, however, there are faster techniques that can compute large factorials in the same amount of time as rapid multiplication for integers with the same number of digits.

**Formula:**

So, n! or “n factorial” means n! = 1. 2. 3……………… n = the Product of first n Positive integers = n(n-1) (n-2) ………………. (3) (2) (1)

For example, 4 factorials, that is, 4! can be written as 4×3×2×1= 24.

**What is a Factorial Distribution?**

The Factorials (!) are the products of each and every whole number from 1 to n. simply we can say that take the number and then multiply through by 1.

For example:

If n is 3, then 3! is 3 x 2 x 1 = 6.

If n is 5, then 5! is 5 x 4 x 3 x 2 x 1 = 120.

It’s a shorthand way of writing numbers. For example, as an alternative to writing 479001600, you can simply write 12! (Which is 12 x 11 x 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1).

**Formula for n Factorial**

The formula for n factorial is

n! = n×(n−1)!

In other words, the factorial of any number is equal to the product of the present number and the factorial of the previous number. So, 8! =8×7!8! =8×7!…… And 9! =9×8!9! =9×8!…… The factorial of 10 will be 10! =10×9!10! =10×9!…… Like this, if we have (n+1) factorial then it can be written as (n+1)! =(n+1) ×n! (n+1)! =(n+1) ×n!.

**What Is 0!**

Zero factorial or Factorial of 0 is interesting, and its value is equal to 1, i.e., 0**! = 1**

Let us see how this works:

1! =12! =2×1=2

3! =3×2×1=3×2! =6

4! =4×3×2×1=4×3! =24

5! =5×4×3×2×1=5×4! =120

Let’s go back to the basic formula of the factorial n! =n×(n−1)! n! =n×(n−1)! How to find 4! What you do is 5!55!5. Now, let’s look at the pattern:

**Factorial of Negative Numbers**

Can we have factorials for numbers like −1, −2, etc? Let’s start with 3! = 3×2×1=63×2×1=6

Let’s start with 3! =3×2×1=6and go down

2! =3! /3=6/3=2

1! =2! /2=2/2=1

0! =1! /1=1/1=1

(−1)! =0! /0=1/0

= dividing by zero is undefined

And any integer factorials after this are undefined. So, negative integer factorials are undefined.

**Factorial of 100**

A hundred factorial is an infinite number. As a result, it is the largest power of a two-digit number which is a three-digit number. Additionally, many mathematical applications depend on this tool. In many mathematical applications, it serves as a crucial tool. For instance, if the two-digit numbers are the same, you’ll need to know that there will always be more twos than fives in the first ten.

**The factorial of hundred** is useful not only in arithmetic but also in other fields. For instance, the factorial of 100 will always be the outcome of shuffling 52 cards. You should multiply each two-digit number by three and then divide the result by the number of the third digit to obtain the factorial of 100. You’ll be able to count the amount of two-digit numbers by doing this.

**100!**

Now, let’s take 100! and calculate the factorial by using the multiplier of the total numbers:

100 x 99 x 98 x 97 x 96 x … = 9.3326215443944E+157

**The answer to what is the Factorial of 100**

100! is exactly: 93326215443944152681699238856266700490715968264381621468592963895217599993229915608941

463976156518286253697920827223758251185210916864000000000000000000000000

The approximate value of 100! is 9.3326215443944E+157.

The number of trailing zeros in 100! is 24.

The total number of digits in 100! is 158.

Through its definition, the 100! is calculated, this way:

100! = 100 • 99 • 98 • 97 • 96 … 3 • 2 • 1