To determine if 57 is a prime number or a composite number, we simply look at the factors for 57.
If the factors of 57 are only 57 and 1, then we know that 57 is a prime number. Otherwise, 57 is a composite number.
To explain better, if 57 is only divisible by 1 and 57, then it is a prime number, and if 57 is divisible by more than 57 and 1, then it is a composite number.
The factors of 57 are as follows:
1, 3, 19, 57
Therefore, since 57 is divisible by more than one and itself, the answer to the
question "Is 57 prime or composite?" is highlighted in blue below.
composite
Is 58 prime or composite?
OK. Now you know that 57 is a composite number. Use our logic above and see if
you can figure out if the next number on our list is prime or composite before you check your answer.
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