To determine if 9991 is a prime number or a composite number, we simply look at the factors for 9991.
If the factors of 9991 are only 9991 and 1, then we know that 9991 is a prime number. Otherwise, 9991 is a composite number.
To explain better, if 9991 is only divisible by 1 and 9991, then it is a prime number, and if 9991 is divisible by more than 9991 and 1, then it is a composite number.
The factors of 9991 are as follows:
1, 97, 103, 9991
Therefore, since 9991 is divisible by more than one and itself, the answer to the
question "Is 9991 prime or composite?" is highlighted in blue below.
composite
Is 9992 prime or composite?
OK. Now you know that 9991 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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