What is 87 factorial ?

To find 87 factorial, or 87!, simply use the formula that multiplies the number 87 by all positive whole numbers less than it.

Let's look at how to calculate the Factorial of Eighty-seven :

  87! is exactly : 2107757298379527717213600518699389595229783738061356212322972511214654115727593174080683423236414793504734471782400000000000000000000

  Factorial of 87 can be calculated as:
87! = 87 x 86 x 85 x 84 x ... x 3 x 2 x 1

  The number of trailing zeros in 87! is 20

  The number of digits in 87 factorial is 133.

• 83 Factorial
• 84 Factorial
• 85 Factorial
• 86 Factorial
• Factorial of 88
• Factorial of 89
• Factorial of 90
• Factorial of 91

A factorial is showed by an integer and an exclamation tag. In math concepts, factorial is a multiplication procedure of natural numbers .

It multiplies the number by every noreal number that is less than it .

Symbolically, it is represented as "!".

The function is used, among other things, to find the "n" way items can be determined .

To find the factorial of any given number, change the value for n in the given formula :

n! = n × (n-1) × (n-2) × (n-3) × ….× 3 × 2 × 1

The expansion of the formula provides numbers to be multiplied to each other to obtain the factorial of the number.

We can also calculate a factorial from the previous one. The factorial of any number is that number replicated the factorial of (that number minus 1).

So the rule is : n! = n × (n−1)!

Example :
87! Factorial = 87 x 86 x 85 x 84 x ... x 3 x 2 x 1 = 87 × 86! = 2107757298379527717213600518699389595229783738061356212322972511214654115727593174080683423236414793504734471782400000000000000000000

The best use of factorial is in Combinations and Permutations.

Example : Determine how to arrange letters without repeating?

There one way for 1 letter "a":
2 ways for two letters "ab": ab, ba.
There are 6 ways for 3 letters "abc": abc acb cab bac bca.
There are 24 ways for 1234 of the letters "abcd"

87 in French

87 in English

Factors of 87