To determine if 2781 is a prime number or a composite number, we simply look at the factors for 2781.
If the factors of 2781 are only 2781 and 1, then we know that 2781 is a prime number. Otherwise, 2781 is a composite number.
To explain better, if 2781 is only divisible by 1 and 2781, then it is a prime number, and if 2781 is divisible by more than 2781 and 1, then it is a composite number.
The factors of 2781 are as follows:
1, 3, 9, 27, 103, 309, 927, 2781
Therefore, since 2781 is divisible by more than one and itself, the answer to the
question "Is 2781 prime or composite?" is highlighted in blue below.
composite
Is 2782 prime or composite?
OK. Now you know that 2781 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.
|
|
