To determine if 318 is a prime number or a composite number, we simply look at the factors for 318.
If the factors of 318 are only 318 and 1, then we know that 318 is a prime number. Otherwise, 318 is a composite number.
To explain better, if 318 is only divisible by 1 and 318, then it is a prime number, and if 318 is divisible by more than 318 and 1, then it is a composite number.
The factors of 318 are as follows:
1, 2, 3, 6, 53, 106, 159, 318
Therefore, since 318 is divisible by more than one and itself, the answer to the
question "Is 318 prime or composite?" is highlighted in blue below.
composite
Is 319 prime or composite?
OK. Now you know that 318 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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