To determine if 7809 is a prime number or a composite number, we simply look at the factors for 7809.
If the factors of 7809 are only 7809 and 1, then we know that 7809 is a prime number. Otherwise, 7809 is a composite number.
To explain better, if 7809 is only divisible by 1 and 7809, then it is a prime number, and if 7809 is divisible by more than 7809 and 1, then it is a composite number.
The factors of 7809 are as follows:
1, 3, 19, 57, 137, 411, 2603, 7809
Therefore, since 7809 is divisible by more than one and itself, the answer to the
question "Is 7809 prime or composite?" is highlighted in blue below.
composite
Is 7810 prime or composite?
OK. Now you know that 7809 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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