To determine if 2255 is a prime number or a composite number, we simply look at the factors for 2255.
If the factors of 2255 are only 2255 and 1, then we know that 2255 is a prime number. Otherwise, 2255 is a composite number.
To explain better, if 2255 is only divisible by 1 and 2255, then it is a prime number, and if 2255 is divisible by more than 2255 and 1, then it is a composite number.
The factors of 2255 are as follows:
1, 5, 11, 41, 55, 205, 451, 2255
Therefore, since 2255 is divisible by more than one and itself, the answer to the
question "Is 2255 prime or composite?" is highlighted in blue below.
composite
Is 2256 prime or composite?
OK. Now you know that 2255 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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