To determine if 4015 is a prime number or a composite number, we simply look at the factors for 4015.
If the factors of 4015 are only 4015 and 1, then we know that 4015 is a prime number. Otherwise, 4015 is a composite number.
To explain better, if 4015 is only divisible by 1 and 4015, then it is a prime number, and if 4015 is divisible by more than 4015 and 1, then it is a composite number.
The factors of 4015 are as follows:
1, 5, 11, 55, 73, 365, 803, 4015
Therefore, since 4015 is divisible by more than one and itself, the answer to the
question "Is 4015 prime or composite?" is highlighted in blue below.
composite
Is 4016 prime or composite?
OK. Now you know that 4015 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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