To determine if 818 is a prime number or a composite number, we simply look at the factors for 818.
If the factors of 818 are only 818 and 1, then we know that 818 is a prime number. Otherwise, 818 is a composite number.
To explain better, if 818 is only divisible by 1 and 818, then it is a prime number, and if 818 is divisible by more than 818 and 1, then it is a composite number.
The factors of 818 are as follows:
1, 2, 409, 818
Therefore, since 818 is divisible by more than one and itself, the answer to the
question "Is 818 prime or composite?" is highlighted in blue below.
composite
Is 819 prime or composite?
OK. Now you know that 818 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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