To determine if 624 is a prime number or a composite number, we simply look at the factors for 624.
If the factors of 624 are only 624 and 1, then we know that 624 is a prime number. Otherwise, 624 is a composite number.
To explain better, if 624 is only divisible by 1 and 624, then it is a prime number, and if 624 is divisible by more than 624 and 1, then it is a composite number.
The factors of 624 are as follows:
1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624
Therefore, since 624 is divisible by more than one and itself, the answer to the
question "Is 624 prime or composite?" is highlighted in blue below.
composite
Is 625 prime or composite?
OK. Now you know that 624 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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