To determine if 1309 is a prime number or a composite number, we simply look at the factors for 1309.
If the factors of 1309 are only 1309 and 1, then we know that 1309 is a prime number. Otherwise, 1309 is a composite number.
To explain better, if 1309 is only divisible by 1 and 1309, then it is a prime number, and if 1309 is divisible by more than 1309 and 1, then it is a composite number.
The factors of 1309 are as follows:
1, 7, 11, 17, 77, 119, 187, 1309
Therefore, since 1309 is divisible by more than one and itself, the answer to the
question "Is 1309 prime or composite?" is highlighted in blue below.
composite
Is 1310 prime or composite?
OK. Now you know that 1309 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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