To determine if 1355 is a prime number or a composite number, we simply look at the factors for 1355.
If the factors of 1355 are only 1355 and 1, then we know that 1355 is a prime number. Otherwise, 1355 is a composite number.
To explain better, if 1355 is only divisible by 1 and 1355, then it is a prime number, and if 1355 is divisible by more than 1355 and 1, then it is a composite number.
The factors of 1355 are as follows:
1, 5, 271, 1355
Therefore, since 1355 is divisible by more than one and itself, the answer to the
question "Is 1355 prime or composite?" is highlighted in blue below.
composite
Is 1356 prime or composite?
OK. Now you know that 1355 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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