To determine if 1377 is a prime number or a composite number, we simply look at the factors for 1377.
If the factors of 1377 are only 1377 and 1, then we know that 1377 is a prime number. Otherwise, 1377 is a composite number.
To explain better, if 1377 is only divisible by 1 and 1377, then it is a prime number, and if 1377 is divisible by more than 1377 and 1, then it is a composite number.
The factors of 1377 are as follows:
1, 3, 9, 17, 27, 51, 81, 153, 459, 1377
Therefore, since 1377 is divisible by more than one and itself, the answer to the
question "Is 1377 prime or composite?" is highlighted in blue below.
composite
Is 1378 prime or composite?
OK. Now you know that 1377 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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