To determine if 9891 is a prime number or a composite number, we simply look at the factors for 9891.
If the factors of 9891 are only 9891 and 1, then we know that 9891 is a prime number. Otherwise, 9891 is a composite number.
To explain better, if 9891 is only divisible by 1 and 9891, then it is a prime number, and if 9891 is divisible by more than 9891 and 1, then it is a composite number.
The factors of 9891 are as follows:
1, 3, 7, 9, 21, 63, 157, 471, 1099, 1413, 3297, 9891
Therefore, since 9891 is divisible by more than one and itself, the answer to the
question "Is 9891 prime or composite?" is highlighted in blue below.
composite
Is 9892 prime or composite?
OK. Now you know that 9891 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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