To determine if 1543 is a prime number or a composite number, we simply look at the factors for 1543.
If the factors of 1543 are only 1543 and 1, then we know that 1543 is a prime number. Otherwise, 1543 is a composite number.
To explain better, if 1543 is only divisible by 1 and 1543, then it is a prime number, and if 1543 is divisible by more than 1543 and 1, then it is a composite number.
The factors of 1543 are as follows:
1, 1543
Therefore, since 1543 is divisible by only one and itself, the answer to the
question "Is 1543 prime or composite?" is highlighted in blue below.
prime
Is 1544 prime or composite?
OK. Now you know that 1543 is a prime 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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