To determine if 381 is a prime number or a composite number, we simply look at the factors for 381.
If the factors of 381 are only 381 and 1, then we know that 381 is a prime number. Otherwise, 381 is a composite number.
To explain better, if 381 is only divisible by 1 and 381, then it is a prime number, and if 381 is divisible by more than 381 and 1, then it is a composite number.
The factors of 381 are as follows:
1, 3, 127, 381
Therefore, since 381 is divisible by more than one and itself, the answer to the
question "Is 381 prime or composite?" is highlighted in blue below.
composite
Is 382 prime or composite?
OK. Now you know that 381 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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