To determine if 543 is a prime number or a composite number, we simply look at the factors for 543.
If the factors of 543 are only 543 and 1, then we know that 543 is a prime number. Otherwise, 543 is a composite number.
To explain better, if 543 is only divisible by 1 and 543, then it is a prime number, and if 543 is divisible by more than 543 and 1, then it is a composite number.
The factors of 543 are as follows:
1, 3, 181, 543
Therefore, since 543 is divisible by more than one and itself, the answer to the
question "Is 543 prime or composite?" is highlighted in blue below.
composite
Is 544 prime or composite?
OK. Now you know that 543 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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