To determine if 531 is a prime number or a composite number, we simply look at the factors for 531.
If the factors of 531 are only 531 and 1, then we know that 531 is a prime number. Otherwise, 531 is a composite number.
To explain better, if 531 is only divisible by 1 and 531, then it is a prime number, and if 531 is divisible by more than 531 and 1, then it is a composite number.
The factors of 531 are as follows:
1, 3, 9, 59, 177, 531
Therefore, since 531 is divisible by more than one and itself, the answer to the
question "Is 531 prime or composite?" is highlighted in blue below.
composite
Is 532 prime or composite?
OK. Now you know that 531 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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