To determine if 100 is a prime number or a composite number, we simply look at the factors for 100.
If the factors of 100 are only 100 and 1, then we know that 100 is a prime number. Otherwise, 100 is a composite number.
To explain better, if 100 is only divisible by 1 and 100, then it is a prime number, and if 100 is divisible by more than 100 and 1, then it is a composite number.
The factors of 100 are as follows:
1, 2, 4, 5, 10, 20, 25, 50, 100
Therefore, since 100 is divisible by more than one and itself, the answer to the
question "Is 100 prime or composite?" is highlighted in blue below.
composite
Is 101 prime or composite?
OK. Now you know that 100 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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