To determine if 142 is a prime number or a composite number, we simply look at the factors for 142.
If the factors of 142 are only 142 and 1, then we know that 142 is a prime number. Otherwise, 142 is a composite number.
To explain better, if 142 is only divisible by 1 and 142, then it is a prime number, and if 142 is divisible by more than 142 and 1, then it is a composite number.
The factors of 142 are as follows:
1, 2, 71, 142
Therefore, since 142 is divisible by more than one and itself, the answer to the
question "Is 142 prime or composite?" is highlighted in blue below.
composite
Is 143 prime or composite?
OK. Now you know that 142 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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