To determine if 530 is a prime number or a composite number, we simply look at the factors for 530.
If the factors of 530 are only 530 and 1, then we know that 530 is a prime number. Otherwise, 530 is a composite number.
To explain better, if 530 is only divisible by 1 and 530, then it is a prime number, and if 530 is divisible by more than 530 and 1, then it is a composite number.
The factors of 530 are as follows:
1, 2, 5, 10, 53, 106, 265, 530
Therefore, since 530 is divisible by more than one and itself, the answer to the
question "Is 530 prime or composite?" is highlighted in blue below.
composite
Is 531 prime or composite?
OK. Now you know that 530 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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