To determine if 158 is a prime number or a composite number, we simply look at the factors for 158.
If the factors of 158 are only 158 and 1, then we know that 158 is a prime number. Otherwise, 158 is a composite number.
To explain better, if 158 is only divisible by 1 and 158, then it is a prime number, and if 158 is divisible by more than 158 and 1, then it is a composite number.
The factors of 158 are as follows:
1, 2, 79, 158
Therefore, since 158 is divisible by more than one and itself, the answer to the
question "Is 158 prime or composite?" is highlighted in blue below.
composite
Is 159 prime or composite?
OK. Now you know that 158 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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