To determine if 1345 is a prime number or a composite number, we simply look at the factors for 1345.
If the factors of 1345 are only 1345 and 1, then we know that 1345 is a prime number. Otherwise, 1345 is a composite number.
To explain better, if 1345 is only divisible by 1 and 1345, then it is a prime number, and if 1345 is divisible by more than 1345 and 1, then it is a composite number.
The factors of 1345 are as follows:
1, 5, 269, 1345
Therefore, since 1345 is divisible by more than one and itself, the answer to the
question "Is 1345 prime or composite?" is highlighted in blue below.
composite
Is 1346 prime or composite?
OK. Now you know that 1345 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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