29
29
23, 29, 31, 37
They are: 23 29 31 and 37
There are two; 29 and 31.
They are: 23 29 31 and 37
17, 23 and 31 are prime. 39 is not.
17, 23 and 31 are prime. 39 is not.
17, 19, 23, 29, and 31
17, 19, 23, 29, and 31
23, 29 and 31
51 = 3 x 17
7 11 13 17 19 23 29.