To determine if 539 is a prime number or a composite number, we simply look at the factors for 539.
If the factors of 539 are only 539 and 1, then we know that 539 is a prime number. Otherwise, 539 is a composite number.
To explain better, if 539 is only divisible by 1 and 539, then it is a prime number, and if 539 is divisible by more than 539 and 1, then it is a composite number.
The factors of 539 are as follows:
1, 7, 11, 49, 77, 539
Therefore, since 539 is divisible by more than one and itself, the answer to the
question "Is 539 prime or composite?" is highlighted in blue below.
composite
Is 540 prime or composite?
OK. Now you know that 539 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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