To determine if 3315 is a prime number or a composite number, we simply look at the factors for 3315.
If the factors of 3315 are only 3315 and 1, then we know that 3315 is a prime number. Otherwise, 3315 is a composite number.
To explain better, if 3315 is only divisible by 1 and 3315, then it is a prime number, and if 3315 is divisible by more than 3315 and 1, then it is a composite number.
The factors of 3315 are as follows:
1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 221, 255, 663, 1105, 3315
Therefore, since 3315 is divisible by more than one and itself, the answer to the
question "Is 3315 prime or composite?" is highlighted in blue below.
composite
Is 3316 prime or composite?
OK. Now you know that 3315 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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