To determine if 7138 is a prime number or a composite number, we simply look at the factors for 7138.
If the factors of 7138 are only 7138 and 1, then we know that 7138 is a prime number. Otherwise, 7138 is a composite number.
To explain better, if 7138 is only divisible by 1 and 7138, then it is a prime number, and if 7138 is divisible by more than 7138 and 1, then it is a composite number.
The factors of 7138 are as follows:
1, 2, 43, 83, 86, 166, 3569, 7138
Therefore, since 7138 is divisible by more than one and itself, the answer to the
question "Is 7138 prime or composite?" is highlighted in blue below.
composite
Is 7139 prime or composite?
OK. Now you know that 7138 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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