To determine if 385 is a prime number or a composite number, we simply look at the factors for 385.
If the factors of 385 are only 385 and 1, then we know that 385 is a prime number. Otherwise, 385 is a composite number.
To explain better, if 385 is only divisible by 1 and 385, then it is a prime number, and if 385 is divisible by more than 385 and 1, then it is a composite number.
The factors of 385 are as follows:
1, 5, 7, 11, 35, 55, 77, 385
Therefore, since 385 is divisible by more than one and itself, the answer to the
question "Is 385 prime or composite?" is highlighted in blue below.
composite
Is 386 prime or composite?
OK. Now you know that 385 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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