To determine if 989 is a prime number or a composite number, we simply look at the factors for 989.
If the factors of 989 are only 989 and 1, then we know that 989 is a prime number. Otherwise, 989 is a composite number.
To explain better, if 989 is only divisible by 1 and 989, then it is a prime number, and if 989 is divisible by more than 989 and 1, then it is a composite number.
The factors of 989 are as follows:
1, 23, 43, 989
Therefore, since 989 is divisible by more than one and itself, the answer to the
question "Is 989 prime or composite?" is highlighted in blue below.
composite
Is 990 prime or composite?
OK. Now you know that 989 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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