Python Program to Print the Strong Numbers from 1 to Nth Number

Tutorialsrack 25/04/2020 Python

In this Python program, we will learn how to print the strong numbers from 1 to N^th number or in between a specific range.

What is a Strong Number?

A Strong Number is a number in which the sum of the factorial of individual digits of that number is equal to the original number. For examples : 1, 2, 145, 40585, etc.

Now take a look at that example, we have a number 145 and its digits are 1, 4, and 5.

Now we find the factorial of each digit like we do

1! = 1 = 1

4! = 4*3*2*1 = 24

5! = 5*4*3*2*1 = 120

Now their sum = 120 + 24 + 1 = 145 which is equal to the Original Number.

Hence We can Say that 145 is a Strong Number.

Here is the source code of the program to print the strong numbers from 1 to N^th number or in between a specific range.

# Python Program to print Strong Numbers from 1 to Nth Number

# Import Module
import math

minValue = int(input("Enter the Minimum Value: "))
maxValue = int(input("Enter the Maximum Value: "))

totalStrongNo = 0

for Number in range(minValue, maxValue):
    Temp = Number
    Sum = 0
    while(Temp > 0):
        Reminder = Temp % 10
        Factorial = math.factorial(Reminder)
        Sum = Sum + Factorial
        Temp = Temp // 10
    
    if (Sum == Number):
        print("%d is a Strong Number" %Number)
        totalStrongNo = totalStrongNo + 1
        
if(totalStrongNo==0):
    print("\nThere is No Strong Number Between {0} and {1}".format(minValue,maxValue))

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