To determine if 1660 is a prime number or a composite number, we simply look at the factors for 1660.
If the factors of 1660 are only 1660 and 1, then we know that 1660 is a prime number. Otherwise, 1660 is a composite number.
To explain better, if 1660 is only divisible by 1 and 1660, then it is a prime number, and if 1660 is divisible by more than 1660 and 1, then it is a composite number.
The factors of 1660 are as follows:
1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660
Therefore, since 1660 is divisible by more than one and itself, the answer to the
question "Is 1660 prime or composite?" is highlighted in blue below.
composite
Is 1661 prime or composite?
OK. Now you know that 1660 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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