To determine if 4089 is a prime number or a composite number, we simply look at the factors for 4089.
If the factors of 4089 are only 4089 and 1, then we know that 4089 is a prime number. Otherwise, 4089 is a composite number.
To explain better, if 4089 is only divisible by 1 and 4089, then it is a prime number, and if 4089 is divisible by more than 4089 and 1, then it is a composite number.
The factors of 4089 are as follows:
1, 3, 29, 47, 87, 141, 1363, 4089
Therefore, since 4089 is divisible by more than one and itself, the answer to the
question "Is 4089 prime or composite?" is highlighted in blue below.
composite
Is 4090 prime or composite?
OK. Now you know that 4089 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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