To determine if 8138 is a prime number or a composite number, we simply look at the factors for 8138.
If the factors of 8138 are only 8138 and 1, then we know that 8138 is a prime number. Otherwise, 8138 is a composite number.
To explain better, if 8138 is only divisible by 1 and 8138, then it is a prime number, and if 8138 is divisible by more than 8138 and 1, then it is a composite number.
The factors of 8138 are as follows:
1, 2, 13, 26, 313, 626, 4069, 8138
Therefore, since 8138 is divisible by more than one and itself, the answer to the
question "Is 8138 prime or composite?" is highlighted in blue below.
composite
Is 8139 prime or composite?
OK. Now you know that 8138 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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