To determine if 1659 is a prime number or a composite number, we simply look at the factors for 1659.
If the factors of 1659 are only 1659 and 1, then we know that 1659 is a prime number. Otherwise, 1659 is a composite number.
To explain better, if 1659 is only divisible by 1 and 1659, then it is a prime number, and if 1659 is divisible by more than 1659 and 1, then it is a composite number.
The factors of 1659 are as follows:
1, 3, 7, 21, 79, 237, 553, 1659
Therefore, since 1659 is divisible by more than one and itself, the answer to the
question "Is 1659 prime or composite?" is highlighted in blue below.
composite
Is 1660 prime or composite?
OK. Now you know that 1659 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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