To determine if 115 is a prime number or a composite number, we simply look at the factors for 115.
If the factors of 115 are only 115 and 1, then we know that 115 is a prime number. Otherwise, 115 is a composite number.
To explain better, if 115 is only divisible by 1 and 115, then it is a prime number, and if 115 is divisible by more than 115 and 1, then it is a composite number.
The factors of 115 are as follows:
1, 5, 23, 115
Therefore, since 115 is divisible by more than one and itself, the answer to the
question "Is 115 prime or composite?" is highlighted in blue below.
composite
Is 116 prime or composite?
OK. Now you know that 115 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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