To determine if 7209 is a prime number or a composite number, we simply look at the factors for 7209.
If the factors of 7209 are only 7209 and 1, then we know that 7209 is a prime number. Otherwise, 7209 is a composite number.
To explain better, if 7209 is only divisible by 1 and 7209, then it is a prime number, and if 7209 is divisible by more than 7209 and 1, then it is a composite number.
The factors of 7209 are as follows:
1, 3, 9, 27, 81, 89, 267, 801, 2403, 7209
Therefore, since 7209 is divisible by more than one and itself, the answer to the
question "Is 7209 prime or composite?" is highlighted in blue below.
composite
Is 7210 prime or composite?
OK. Now you know that 7209 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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