To determine if 389 is a prime number or a composite number, we simply look at the factors for 389.
If the factors of 389 are only 389 and 1, then we know that 389 is a prime number. Otherwise, 389 is a composite number.
To explain better, if 389 is only divisible by 1 and 389, then it is a prime number, and if 389 is divisible by more than 389 and 1, then it is a composite number.
The factors of 389 are as follows:
1, 389
Therefore, since 389 is divisible by only one and itself, the answer to the
question "Is 389 prime or composite?" is highlighted in blue below.
prime
Is 390 prime or composite?
OK. Now you know that 389 is a prime 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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