To determine if 144 is a prime number or a composite number, we simply look at the factors for 144.
If the factors of 144 are only 144 and 1, then we know that 144 is a prime number. Otherwise, 144 is a composite number.
To explain better, if 144 is only divisible by 1 and 144, then it is a prime number, and if 144 is divisible by more than 144 and 1, then it is a composite number.
The factors of 144 are as follows:
1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144
Therefore, since 144 is divisible by more than one and itself, the answer to the
question "Is 144 prime or composite?" is highlighted in blue below.
composite
Is 145 prime or composite?
OK. Now you know that 144 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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