To determine if 1284 is a prime number or a composite number, we simply look at the factors for 1284.
If the factors of 1284 are only 1284 and 1, then we know that 1284 is a prime number. Otherwise, 1284 is a composite number.
To explain better, if 1284 is only divisible by 1 and 1284, then it is a prime number, and if 1284 is divisible by more than 1284 and 1, then it is a composite number.
The factors of 1284 are as follows:
1, 2, 3, 4, 6, 12, 107, 214, 321, 428, 642, 1284
Therefore, since 1284 is divisible by more than one and itself, the answer to the
question "Is 1284 prime or composite?" is highlighted in blue below.
composite
Is 1285 prime or composite?
OK. Now you know that 1284 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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