To determine if 427 is a prime number or a composite number, we simply look at the factors for 427.
If the factors of 427 are only 427 and 1, then we know that 427 is a prime number. Otherwise, 427 is a composite number.
To explain better, if 427 is only divisible by 1 and 427, then it is a prime number, and if 427 is divisible by more than 427 and 1, then it is a composite number.
The factors of 427 are as follows:
1, 7, 61, 427
Therefore, since 427 is divisible by more than one and itself, the answer to the
question "Is 427 prime or composite?" is highlighted in blue below.
composite
Is 428 prime or composite?
OK. Now you know that 427 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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