To determine if 8440 is a prime number or a composite number, we simply look at the factors for 8440.
If the factors of 8440 are only 8440 and 1, then we know that 8440 is a prime number. Otherwise, 8440 is a composite number.
To explain better, if 8440 is only divisible by 1 and 8440, then it is a prime number, and if 8440 is divisible by more than 8440 and 1, then it is a composite number.
The factors of 8440 are as follows:
1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 8440
Therefore, since 8440 is divisible by more than one and itself, the answer to the
question "Is 8440 prime or composite?" is highlighted in blue below.
composite
Is 8441 prime or composite?
OK. Now you know that 8440 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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