To determine if 670 is a prime number or a composite number, we simply look at the factors for 670.
If the factors of 670 are only 670 and 1, then we know that 670 is a prime number. Otherwise, 670 is a composite number.
To explain better, if 670 is only divisible by 1 and 670, then it is a prime number, and if 670 is divisible by more than 670 and 1, then it is a composite number.
The factors of 670 are as follows:
1, 2, 5, 10, 67, 134, 335, 670
Therefore, since 670 is divisible by more than one and itself, the answer to the
question "Is 670 prime or composite?" is highlighted in blue below.
composite
Is 671 prime or composite?
OK. Now you know that 670 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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