To determine if 7128 is a prime number or a composite number, we simply look at the factors for 7128.
If the factors of 7128 are only 7128 and 1, then we know that 7128 is a prime number. Otherwise, 7128 is a composite number.
To explain better, if 7128 is only divisible by 1 and 7128, then it is a prime number, and if 7128 is divisible by more than 7128 and 1, then it is a composite number.
The factors of 7128 are as follows:
1, 2, 3, 4, 6, 8, 9, 11, 12, 18, 22, 24, 27, 33, 36, 44, 54, 66, 72, 81, 88, 99, 108, 132, 162, 198, 216, 264, 297, 324, 396, 594, 648, 792, 891, 1188, 1782, 2376, 3564, 7128
Therefore, since 7128 is divisible by more than one and itself, the answer to the
question "Is 7128 prime or composite?" is highlighted in blue below.
composite
Is 7129 prime or composite?
OK. Now you know that 7128 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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