To determine if 168 is a prime number or a composite number, we simply look at the factors for 168.
If the factors of 168 are only 168 and 1, then we know that 168 is a prime number. Otherwise, 168 is a composite number.
To explain better, if 168 is only divisible by 1 and 168, then it is a prime number, and if 168 is divisible by more than 168 and 1, then it is a composite number.
The factors of 168 are as follows:
1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168
Therefore, since 168 is divisible by more than one and itself, the answer to the
question "Is 168 prime or composite?" is highlighted in blue below.
composite
Is 169 prime or composite?
OK. Now you know that 168 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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