To determine if 509 is a prime number or a composite number, we simply look at the factors for 509.
If the factors of 509 are only 509 and 1, then we know that 509 is a prime number. Otherwise, 509 is a composite number.
To explain better, if 509 is only divisible by 1 and 509, then it is a prime number, and if 509 is divisible by more than 509 and 1, then it is a composite number.
The factors of 509 are as follows:
1, 509
Therefore, since 509 is divisible by only one and itself, the answer to the
question "Is 509 prime or composite?" is highlighted in blue below.
prime
Is 510 prime or composite?
OK. Now you know that 509 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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