To determine if 655 is a prime number or a composite number, we simply look at the factors for 655.
If the factors of 655 are only 655 and 1, then we know that 655 is a prime number. Otherwise, 655 is a composite number.
To explain better, if 655 is only divisible by 1 and 655, then it is a prime number, and if 655 is divisible by more than 655 and 1, then it is a composite number.
The factors of 655 are as follows:
1, 5, 131, 655
Therefore, since 655 is divisible by more than one and itself, the answer to the
question "Is 655 prime or composite?" is highlighted in blue below.
composite
Is 656 prime or composite?
OK. Now you know that 655 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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