17 Cannot be divided. All the other numbers can be. 15/3, 42/3, 33/3
Prime: Can only be divided by itself and 1. 17/17 and 17/1, nothing else works.
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No, they are composite numbers. The factors of 15 are 1, 3, 5, and 15. The factors of 33 are 1, 3, 11, and 33. Prime numbers have two factors: 1 and the number itself, so 15 and 33 cannot be prime.
There are 5 prime numbers between 15 and 53, they are 17, 19, 23, 29, and 31.
43 is a prime 33 is composite
33 is a composite number.
33 is not a prime number because 3 x 11 = 33.