Tutorial

Two prime numbers A,B (A<B) are called twin primes if they differ by 2.

Also, any prime number greater than 3 will be in the form of 6x+1 or 6x−1.

Eg. of twin prime

5,7

11,13

17,19

29,31

eg. of prime numbers with 6x + 1

7,13, 19, 31, 37, 43, 61.......

eg. of prime numbers with 6x - 1

5, 11, 17, 23, 29, 41.......