Program to find number is twin prime or not

 If two prime difference is 2 then number is called twin prime number. So to check number is twin prime or not

First check number is prime or not.

Second check both prime number difference is 2 or not if difference is 2 then number is twin prime number.

Program

def pr(x):

    for i in range(2,x):

        if(x%i==0):

            print("number is not prime")

            return False

    return True

    

n1=int(input("enter number1"))

n2= int(input("enter number2"))           

if pr(n1) and pr(n2):

    if abs(n1-n2)==2:

        print("number is twin prime")

    else:

         print("number is not twin prime")

Example

enter number1 5

enter number2 3

Both 5 and 3 are prime number

Difference between 5 and 3 is 2 so number is twin prime number.

Note

How to check  5 is prime or not

Smaller than 5 number is

2,3,4

5 cannot divided 2,3,4 so number 5 is prime number.