To determine if 755 is a prime number or a composite number, we simply look at the factors for 755.
If the factors of 755 are only 755 and 1, then we know that 755 is a prime number. Otherwise, 755 is a composite number.
To explain better, if 755 is only divisible by 1 and 755, then it is a prime number, and if 755 is divisible by more than 755 and 1, then it is a composite number.
The factors of 755 are as follows:
1, 5, 151, 755
Therefore, since 755 is divisible by more than one and itself, the answer to the
question "Is 755 prime or composite?" is highlighted in blue below.
composite
Is 756 prime or composite?
OK. Now you know that 755 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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