To determine if 873 is a prime number or a composite number, we simply look at the factors for 873.
If the factors of 873 are only 873 and 1, then we know that 873 is a prime number. Otherwise, 873 is a composite number.
To explain better, if 873 is only divisible by 1 and 873, then it is a prime number, and if 873 is divisible by more than 873 and 1, then it is a composite number.
The factors of 873 are as follows:
1, 3, 9, 97, 291, 873
Therefore, since 873 is divisible by more than one and itself, the answer to the
question "Is 873 prime or composite?" is highlighted in blue below.
composite
Is 874 prime or composite?
OK. Now you know that 873 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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