No, neither of them are.
No.
They are all prime numbers except for 15 21 25 and 27 which are composite numbers
YES
If you mean: 12 13 15 17 27 and 29 then the prime numbers are 13 17 and 29
29 and 31 are prime. The rest are composite numbers.
No, neither 27 nor 57 are prime numbers.
Neither 27 nor 52 are prime numbers. Both are composite numbers, instead.
NO. Not all odd numbers are prime like 9, 15, 21, 27,... because they have other factors aside from 1 and itself.
23 and 27 are prime numbers whereas 36 and 39 are composite numbers.
no
prime factor of 27 : 3factors of 27: 1, 3, 9, 27
Prime factorization of 27 = 3x3x3