To determine if 7721 is a prime number or a composite number, we simply look at the factors for 7721.
If the factors of 7721 are only 7721 and 1, then we know that 7721 is a prime number. Otherwise, 7721 is a composite number.
To explain better, if 7721 is only divisible by 1 and 7721, then it is a prime number, and if 7721 is divisible by more than 7721 and 1, then it is a composite number.
The factors of 7721 are as follows:
1, 7, 1103, 7721
Therefore, since 7721 is divisible by more than one and itself, the answer to the
question "Is 7721 prime or composite?" is highlighted in blue below.
composite
Is 7722 prime or composite?
OK. Now you know that 7721 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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