To determine if 1397 is a prime number or a composite number, we simply look at the factors for 1397.
If the factors of 1397 are only 1397 and 1, then we know that 1397 is a prime number. Otherwise, 1397 is a composite number.
To explain better, if 1397 is only divisible by 1 and 1397, then it is a prime number, and if 1397 is divisible by more than 1397 and 1, then it is a composite number.
The factors of 1397 are as follows:
1, 11, 127, 1397
Therefore, since 1397 is divisible by more than one and itself, the answer to the
question "Is 1397 prime or composite?" is highlighted in blue below.
composite
Is 1398 prime or composite?
OK. Now you know that 1397 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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