To determine if 3155 is a prime number or a composite number, we simply look at the factors for 3155.
If the factors of 3155 are only 3155 and 1, then we know that 3155 is a prime number. Otherwise, 3155 is a composite number.
To explain better, if 3155 is only divisible by 1 and 3155, then it is a prime number, and if 3155 is divisible by more than 3155 and 1, then it is a composite number.
The factors of 3155 are as follows:
1, 5, 631, 3155
Therefore, since 3155 is divisible by more than one and itself, the answer to the
question "Is 3155 prime or composite?" is highlighted in blue below.
composite
Is 3156 prime or composite?
OK. Now you know that 3155 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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