To determine if 545 is a prime number or a composite number, we simply look at the factors for 545.
If the factors of 545 are only 545 and 1, then we know that 545 is a prime number. Otherwise, 545 is a composite number.
To explain better, if 545 is only divisible by 1 and 545, then it is a prime number, and if 545 is divisible by more than 545 and 1, then it is a composite number.
The factors of 545 are as follows:
1, 5, 109, 545
Therefore, since 545 is divisible by more than one and itself, the answer to the
question "Is 545 prime or composite?" is highlighted in blue below.
composite
Is 546 prime or composite?
OK. Now you know that 545 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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