To determine if 540 is a prime number or a composite number, we simply look at the factors for 540.
If the factors of 540 are only 540 and 1, then we know that 540 is a prime number. Otherwise, 540 is a composite number.
To explain better, if 540 is only divisible by 1 and 540, then it is a prime number, and if 540 is divisible by more than 540 and 1, then it is a composite number.
The factors of 540 are as follows:
1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540
Therefore, since 540 is divisible by more than one and itself, the answer to the
question "Is 540 prime or composite?" is highlighted in blue below.
composite
Is 541 prime or composite?
OK. Now you know that 540 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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