To determine if 1128 is a prime number or a composite number, we simply look at the factors for 1128.
If the factors of 1128 are only 1128 and 1, then we know that 1128 is a prime number. Otherwise, 1128 is a composite number.
To explain better, if 1128 is only divisible by 1 and 1128, then it is a prime number, and if 1128 is divisible by more than 1128 and 1, then it is a composite number.
The factors of 1128 are as follows:
1, 2, 3, 4, 6, 8, 12, 24, 47, 94, 141, 188, 282, 376, 564, 1128
Therefore, since 1128 is divisible by more than one and itself, the answer to the
question "Is 1128 prime or composite?" is highlighted in blue below.
composite
Is 1129 prime or composite?
OK. Now you know that 1128 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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