To determine if 351 is a prime number or a composite number, we simply look at the factors for 351.
If the factors of 351 are only 351 and 1, then we know that 351 is a prime number. Otherwise, 351 is a composite number.
To explain better, if 351 is only divisible by 1 and 351, then it is a prime number, and if 351 is divisible by more than 351 and 1, then it is a composite number.
The factors of 351 are as follows:
1, 3, 9, 13, 27, 39, 117, 351
Therefore, since 351 is divisible by more than one and itself, the answer to the
question "Is 351 prime or composite?" is highlighted in blue below.
composite
Is 352 prime or composite?
OK. Now you know that 351 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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