To determine if 7221 is a prime number or a composite number, we simply look at the factors for 7221.
If the factors of 7221 are only 7221 and 1, then we know that 7221 is a prime number. Otherwise, 7221 is a composite number.
To explain better, if 7221 is only divisible by 1 and 7221, then it is a prime number, and if 7221 is divisible by more than 7221 and 1, then it is a composite number.
The factors of 7221 are as follows:
1, 3, 29, 83, 87, 249, 2407, 7221
Therefore, since 7221 is divisible by more than one and itself, the answer to the
question "Is 7221 prime or composite?" is highlighted in blue below.
composite
Is 7222 prime or composite?
OK. Now you know that 7221 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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