From that list, only 31 is a Prime number.
31 is prime.
31
31 is prime. 32 and 33 are composite.
31
31
It is b: 31
The greatest common factor of 31, 32, and 33 is 1.
All of them except for 31 and 37 which are prime numbers
31, 32, 33
The factors of 31 are: 1, 31 The factors of 32 are: 1, 2, 4, 8, 16, 32 The factors of 33 are: 1, 3, 11, 33
there are 3 prime numbers in between 21 and 33... they are 23,29, 31.
31+32+33 = 96