To determine if 891 is a prime number or a composite number, we simply look at the factors for 891.
If the factors of 891 are only 891 and 1, then we know that 891 is a prime number. Otherwise, 891 is a composite number.
To explain better, if 891 is only divisible by 1 and 891, then it is a prime number, and if 891 is divisible by more than 891 and 1, then it is a composite number.
The factors of 891 are as follows:
1, 3, 9, 11, 27, 33, 81, 99, 297, 891
Therefore, since 891 is divisible by more than one and itself, the answer to the
question "Is 891 prime or composite?" is highlighted in blue below.
composite
Is 892 prime or composite?
OK. Now you know that 891 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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