1 + 297 + 2311 + 1913 + 17
7+3=10 17+3=20 17+13=30
They are 13 and 17
30 - 31 = -1
5 * 2 * 3
13 + 17 = 30
1 + 297 + 2311 + 1913 + 17
7+3=10 17+3=20 17+13=30
The sum of all prime numbers less than 30 is 129.
The prime numbers of: 23 plus 7 = 30 Also, 11 + 19 = 30 and 13 + 17 = 30
They are 13 and 17
311
68
From 30 to 40 they are 31 and 37
30 - 31 = -1
5 * 2 * 3
2 17 11