To determine if 4389 is a prime number or a composite number, we simply look at the factors for 4389.
If the factors of 4389 are only 4389 and 1, then we know that 4389 is a prime number. Otherwise, 4389 is a composite number.
To explain better, if 4389 is only divisible by 1 and 4389, then it is a prime number, and if 4389 is divisible by more than 4389 and 1, then it is a composite number.
The factors of 4389 are as follows:
1, 3, 7, 11, 19, 21, 33, 57, 77, 133, 209, 231, 399, 627, 1463, 4389
Therefore, since 4389 is divisible by more than one and itself, the answer to the
question "Is 4389 prime or composite?" is highlighted in blue below.
composite
Is 4390 prime or composite?
OK. Now you know that 4389 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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