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