To determine if 5421 is a prime number or a composite number, we simply look at the factors for 5421.
If the factors of 5421 are only 5421 and 1, then we know that 5421 is a prime number. Otherwise, 5421 is a composite number.
To explain better, if 5421 is only divisible by 1 and 5421, then it is a prime number, and if 5421 is divisible by more than 5421 and 1, then it is a composite number.
The factors of 5421 are as follows:
1, 3, 13, 39, 139, 417, 1807, 5421
Therefore, since 5421 is divisible by more than one and itself, the answer to the
question "Is 5421 prime or composite?" is highlighted in blue below.
composite
Is 5422 prime or composite?
OK. Now you know that 5421 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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