To determine if 628 is a prime number or a composite number, we simply look at the factors for 628.
If the factors of 628 are only 628 and 1, then we know that 628 is a prime number. Otherwise, 628 is a composite number.
To explain better, if 628 is only divisible by 1 and 628, then it is a prime number, and if 628 is divisible by more than 628 and 1, then it is a composite number.
The factors of 628 are as follows:
1, 2, 4, 157, 314, 628
Therefore, since 628 is divisible by more than one and itself, the answer to the
question "Is 628 prime or composite?" is highlighted in blue below.
composite
Is 629 prime or composite?
OK. Now you know that 628 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.
|
|
