To determine if 1399 is a prime number or a composite number, we simply look at the factors for 1399.
If the factors of 1399 are only 1399 and 1, then we know that 1399 is a prime number. Otherwise, 1399 is a composite number.
To explain better, if 1399 is only divisible by 1 and 1399, then it is a prime number, and if 1399 is divisible by more than 1399 and 1, then it is a composite number.
The factors of 1399 are as follows:
1, 1399
Therefore, since 1399 is divisible by only one and itself, the answer to the
question "Is 1399 prime or composite?" is highlighted in blue below.
prime
Is 1400 prime or composite?
OK. Now you know that 1399 is a prime 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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