Add them up and you get 69 ;)
36
The prime numbers from 1 to 33 are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, and 31.
There are 5 prime numbers between 15 and 53, they are 17, 19, 23, 29, and 31.
prolly jersey numbers
33
2 3 5 7 11 13 17 19 23 29 31.
The numbers are 16 and 17.
The set of prime numbers or any subset of it.
15 17 19 21 23 25 27 29 31 33 35 37 39
19
The median of the numbers 19 30 33 37 37 42 is 35.
Of that group, 19 and 37 are prime.