To determine if 1385 is a prime number or a composite number, we simply look at the factors for 1385.
If the factors of 1385 are only 1385 and 1, then we know that 1385 is a prime number. Otherwise, 1385 is a composite number.
To explain better, if 1385 is only divisible by 1 and 1385, then it is a prime number, and if 1385 is divisible by more than 1385 and 1, then it is a composite number.
The factors of 1385 are as follows:
1, 5, 277, 1385
Therefore, since 1385 is divisible by more than one and itself, the answer to the
question "Is 1385 prime or composite?" is highlighted in blue below.
composite
Is 1386 prime or composite?
OK. Now you know that 1385 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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