To determine if 7421 is a prime number or a composite number, we simply look at the factors for 7421.
If the factors of 7421 are only 7421 and 1, then we know that 7421 is a prime number. Otherwise, 7421 is a composite number.
To explain better, if 7421 is only divisible by 1 and 7421, then it is a prime number, and if 7421 is divisible by more than 7421 and 1, then it is a composite number.
The factors of 7421 are as follows:
1, 41, 181, 7421
Therefore, since 7421 is divisible by more than one and itself, the answer to the
question "Is 7421 prime or composite?" is highlighted in blue below.
composite
Is 7422 prime or composite?
OK. Now you know that 7421 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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