To determine if 4139 is a prime number or a composite number, we simply look at the factors for 4139.
If the factors of 4139 are only 4139 and 1, then we know that 4139 is a prime number. Otherwise, 4139 is a composite number.
To explain better, if 4139 is only divisible by 1 and 4139, then it is a prime number, and if 4139 is divisible by more than 4139 and 1, then it is a composite number.
The factors of 4139 are as follows:
1, 4139
Therefore, since 4139 is divisible by only one and itself, the answer to the
question "Is 4139 prime or composite?" is highlighted in blue below.
prime
Is 4140 prime or composite?
OK. Now you know that 4139 is a prime 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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