To determine if 9980 is a prime number or a composite number, we simply look at the factors for 9980.
If the factors of 9980 are only 9980 and 1, then we know that 9980 is a prime number. Otherwise, 9980 is a composite number.
To explain better, if 9980 is only divisible by 1 and 9980, then it is a prime number, and if 9980 is divisible by more than 9980 and 1, then it is a composite number.
The factors of 9980 are as follows:
1, 2, 4, 5, 10, 20, 499, 998, 1996, 2495, 4990, 9980
Therefore, since 9980 is divisible by more than one and itself, the answer to the
question "Is 9980 prime or composite?" is highlighted in blue below.
composite
Is 9981 prime or composite?
OK. Now you know that 9980 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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