To determine if 2800 is a prime number or a composite number, we simply look at the factors for 2800.
If the factors of 2800 are only 2800 and 1, then we know that 2800 is a prime number. Otherwise, 2800 is a composite number.
To explain better, if 2800 is only divisible by 1 and 2800, then it is a prime number, and if 2800 is divisible by more than 2800 and 1, then it is a composite number.
The factors of 2800 are as follows:
1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 70, 80, 100, 112, 140, 175, 200, 280, 350, 400, 560, 700, 1400, 2800
Therefore, since 2800 is divisible by more than one and itself, the answer to the
question "Is 2800 prime or composite?" is highlighted in blue below.
composite
Is 2801 prime or composite?
OK. Now you know that 2800 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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