To determine if 2905 is a prime number or a composite number, we simply look at the factors for 2905.
If the factors of 2905 are only 2905 and 1, then we know that 2905 is a prime number. Otherwise, 2905 is a composite number.
To explain better, if 2905 is only divisible by 1 and 2905, then it is a prime number, and if 2905 is divisible by more than 2905 and 1, then it is a composite number.
The factors of 2905 are as follows:
1, 5, 7, 35, 83, 415, 581, 2905
Therefore, since 2905 is divisible by more than one and itself, the answer to the
question "Is 2905 prime or composite?" is highlighted in blue below.
composite
Is 2906 prime or composite?
OK. Now you know that 2905 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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