To determine if 8640 is a prime number or a composite number, we simply look at the factors for 8640.
If the factors of 8640 are only 8640 and 1, then we know that 8640 is a prime number. Otherwise, 8640 is a composite number.
To explain better, if 8640 is only divisible by 1 and 8640, then it is a prime number, and if 8640 is divisible by more than 8640 and 1, then it is a composite number.
The factors of 8640 are as follows:
1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 135, 144, 160, 180, 192, 216, 240, 270, 288, 320, 360, 432, 480, 540, 576, 720, 864, 960, 1080, 1440, 1728, 2160, 2880, 4320, 8640
Therefore, since 8640 is divisible by more than one and itself, the answer to the
question "Is 8640 prime or composite?" is highlighted in blue below.
composite
Is 8641 prime or composite?
OK. Now you know that 8640 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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