To determine if 667 is a prime number or a composite number, we simply look at the factors for 667.
If the factors of 667 are only 667 and 1, then we know that 667 is a prime number. Otherwise, 667 is a composite number.
To explain better, if 667 is only divisible by 1 and 667, then it is a prime number, and if 667 is divisible by more than 667 and 1, then it is a composite number.
The factors of 667 are as follows:
1, 23, 29, 667
Therefore, since 667 is divisible by more than one and itself, the answer to the
question "Is 667 prime or composite?" is highlighted in blue below.
composite
Is 668 prime or composite?
OK. Now you know that 667 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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