To determine if 909 is a prime number or a composite number, we simply look at the factors for 909.
If the factors of 909 are only 909 and 1, then we know that 909 is a prime number. Otherwise, 909 is a composite number.
To explain better, if 909 is only divisible by 1 and 909, then it is a prime number, and if 909 is divisible by more than 909 and 1, then it is a composite number.
The factors of 909 are as follows:
1, 3, 9, 101, 303, 909
Therefore, since 909 is divisible by more than one and itself, the answer to the
question "Is 909 prime or composite?" is highlighted in blue below.
composite
Is 910 prime or composite?
OK. Now you know that 909 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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