To determine if 1275 is a prime number or a composite number, we simply look at the factors for 1275.
If the factors of 1275 are only 1275 and 1, then we know that 1275 is a prime number. Otherwise, 1275 is a composite number.
To explain better, if 1275 is only divisible by 1 and 1275, then it is a prime number, and if 1275 is divisible by more than 1275 and 1, then it is a composite number.
The factors of 1275 are as follows:
1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275
Therefore, since 1275 is divisible by more than one and itself, the answer to the
question "Is 1275 prime or composite?" is highlighted in blue below.
composite
Is 1276 prime or composite?
OK. Now you know that 1275 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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