If you would like to know what is the prime number between 6 and 14, you can find it as follows:
A prime number is an integer which has only two factors: 1 and itself.
6: 1, 2, 3, 6
7: 1, 7 ... prime number
8: 1, 2, 4, 8
9: 1, 3, 9
10: 1, 2, 5, 10
11: 1, 11 ... prime number
12: 1, 2, 3, 4, 6, 12
13: 1, 13 ... prime number
14: 1, 2, 7, 14
Result: The prime numbers between 6 and 14 are 7, 11, 13.