And the sum of 5..? Uhh... Is it 5?
The sum of all prime numbers less than ten is 17. Pick a number 18 or higher.
5
5
23
(2,3) and (2,5) are the two pairs such that the sum of their elements is a prime number.
The number is 17.
23
29 + 31 = 60
97 + 101 = 198
97 + 101 = 198
17
23