To determine if 1143 is a prime number or a composite number, we simply look at the factors for 1143.
If the factors of 1143 are only 1143 and 1, then we know that 1143 is a prime number. Otherwise, 1143 is a composite number.
To explain better, if 1143 is only divisible by 1 and 1143, then it is a prime number, and if 1143 is divisible by more than 1143 and 1, then it is a composite number.
The factors of 1143 are as follows:
1, 3, 9, 127, 381, 1143
Therefore, since 1143 is divisible by more than one and itself, the answer to the
question "Is 1143 prime or composite?" is highlighted in blue below.
composite
Is 1144 prime or composite?
OK. Now you know that 1143 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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