To determine if 3139 is a prime number or a composite number, we simply look at the factors for 3139.
If the factors of 3139 are only 3139 and 1, then we know that 3139 is a prime number. Otherwise, 3139 is a composite number.
To explain better, if 3139 is only divisible by 1 and 3139, then it is a prime number, and if 3139 is divisible by more than 3139 and 1, then it is a composite number.
The factors of 3139 are as follows:
1, 43, 73, 3139
Therefore, since 3139 is divisible by more than one and itself, the answer to the
question "Is 3139 prime or composite?" is highlighted in blue below.
composite
Is 3140 prime or composite?
OK. Now you know that 3139 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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