To determine if 839 is a prime number or a composite number, we simply look at the factors for 839.
If the factors of 839 are only 839 and 1, then we know that 839 is a prime number. Otherwise, 839 is a composite number.
To explain better, if 839 is only divisible by 1 and 839, then it is a prime number, and if 839 is divisible by more than 839 and 1, then it is a composite number.
The factors of 839 are as follows:
1, 839
Therefore, since 839 is divisible by only one and itself, the answer to the
question "Is 839 prime or composite?" is highlighted in blue below.
prime
Is 840 prime or composite?
OK. Now you know that 839 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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