To determine if 1255 is a prime number or a composite number, we simply look at the factors for 1255.
If the factors of 1255 are only 1255 and 1, then we know that 1255 is a prime number. Otherwise, 1255 is a composite number.
To explain better, if 1255 is only divisible by 1 and 1255, then it is a prime number, and if 1255 is divisible by more than 1255 and 1, then it is a composite number.
The factors of 1255 are as follows:
1, 5, 251, 1255
Therefore, since 1255 is divisible by more than one and itself, the answer to the
question "Is 1255 prime or composite?" is highlighted in blue below.
composite
Is 1256 prime or composite?
OK. Now you know that 1255 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.
|
|
