To determine if 4138 is a prime number or a composite number, we simply look at the factors for 4138.
If the factors of 4138 are only 4138 and 1, then we know that 4138 is a prime number. Otherwise, 4138 is a composite number.
To explain better, if 4138 is only divisible by 1 and 4138, then it is a prime number, and if 4138 is divisible by more than 4138 and 1, then it is a composite number.
The factors of 4138 are as follows:
1, 2, 2069, 4138
Therefore, since 4138 is divisible by more than one and itself, the answer to the
question "Is 4138 prime or composite?" is highlighted in blue below.
composite
Is 4139 prime or composite?
OK. Now you know that 4138 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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