C Program for Strong Number1 min read

In this tutorial, we will learn about the strong number and write a C Program to find Strong Number.

Strong Number

Strong numbers are those numbers whose sum of the factorial of the individual digits is equal to the number itself.

Example: 145 is a strong number.

Explanation: 145
1! + 4! + 5!
= 1 + 24 + 120
= 145, number itself.
Hence it is a Strong number.

Let us understand the Strong number in C program.


C program to check whether a number is Strong number or not

Output:

Enter the number to be checked: 145
145 is a strong number.


Let us go through another example where we display all the strong numbers within an entered range.

C Program to print strong numbers in a given range

Output:

Enter the lower range: 1
Enter the upper range: 300
Strong number between entered range are: 1 2 145


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