Python Example programs : Prime Number

 Finding a number is prime or not in python

Example1

x = int(input("enter a number: "))

i=2

while (i<x):

    if (x%i == 0):

        print(f"{x} is not a prime number")

        break

     

    i=i+1

else:

        print(f"{x} is  a prime number")

Output

enter a number: 7727

7727 is a prime number

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Example 2

x = int(input("enter a  number: "))

i=2

if x <= 0:

       print(f"{x} is not a prime number")

else:

    while (i<x):

        if (x%i == 0):

          print(f"{x} is not a prime number")

          break

     

        i=i+1

    else:

        print(f"{x} is  a prime number")

Output

enter a positive integer number: 0

0 is not a prime number