To determine if 64 is a prime number or a composite number, we simply look at the factors for 64.
If the factors of 64 are only 64 and 1, then we know that 64 is a prime number. Otherwise, 64 is a composite number.
To explain better, if 64 is only divisible by 1 and 64, then it is a prime number, and if 64 is divisible by more than 64 and 1, then it is a composite number.
The factors of 64 are as follows:
1, 2, 4, 8, 16, 32, 64
Therefore, since 64 is divisible by more than one and itself, the answer to the
question "Is 64 prime or composite?" is highlighted in blue below.
composite
Is 65 prime or composite?
OK. Now you know that 64 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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