To determine if 170 is a prime number or a composite number, we simply look at the factors for 170.
If the factors of 170 are only 170 and 1, then we know that 170 is a prime number. Otherwise, 170 is a composite number.
To explain better, if 170 is only divisible by 1 and 170, then it is a prime number, and if 170 is divisible by more than 170 and 1, then it is a composite number.
The factors of 170 are as follows:
1, 2, 5, 10, 17, 34, 85, 170
Therefore, since 170 is divisible by more than one and itself, the answer to the
question "Is 170 prime or composite?" is highlighted in blue below.
composite
Is 171 prime or composite?
OK. Now you know that 170 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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