No, neither 27 nor 57 are prime numbers.
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There are three prime numbers between 57 and 69. They are 59, 61, and 67.
27, 57 and 77 are composite.
The numbers 47 and 53 are prime.
Prime factorization is the finding which prime number multiply to get to make the original number. 57: 1, 3, 19, 57 Prime Factors: 3, 19 3 x 19 = 57
3 and 19