To determine if 511 is a prime number or a composite number, we simply look at the factors for 511.
If the factors of 511 are only 511 and 1, then we know that 511 is a prime number. Otherwise, 511 is a composite number.
To explain better, if 511 is only divisible by 1 and 511, then it is a prime number, and if 511 is divisible by more than 511 and 1, then it is a composite number.
The factors of 511 are as follows:
1, 7, 73, 511
Therefore, since 511 is divisible by more than one and itself, the answer to the
question "Is 511 prime or composite?" is highlighted in blue below.
composite
Is 512 prime or composite?
OK. Now you know that 511 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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