To determine if 1378 is a prime number or a composite number, we simply look at the factors for 1378.
If the factors of 1378 are only 1378 and 1, then we know that 1378 is a prime number. Otherwise, 1378 is a composite number.
To explain better, if 1378 is only divisible by 1 and 1378, then it is a prime number, and if 1378 is divisible by more than 1378 and 1, then it is a composite number.
The factors of 1378 are as follows:
1, 2, 13, 26, 53, 106, 689, 1378
Therefore, since 1378 is divisible by more than one and itself, the answer to the
question "Is 1378 prime or composite?" is highlighted in blue below.
composite
Is 1379 prime or composite?
OK. Now you know that 1378 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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