To determine if 150 is a prime number or a composite number, we simply look at the factors for 150.
If the factors of 150 are only 150 and 1, then we know that 150 is a prime number. Otherwise, 150 is a composite number.
To explain better, if 150 is only divisible by 1 and 150, then it is a prime number, and if 150 is divisible by more than 150 and 1, then it is a composite number.
The factors of 150 are as follows:
1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150
Therefore, since 150 is divisible by more than one and itself, the answer to the
question "Is 150 prime or composite?" is highlighted in blue below.
composite
Is 151 prime or composite?
OK. Now you know that 150 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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