To determine if 635 is a prime number or a composite number, we simply look at the factors for 635.
If the factors of 635 are only 635 and 1, then we know that 635 is a prime number. Otherwise, 635 is a composite number.
To explain better, if 635 is only divisible by 1 and 635, then it is a prime number, and if 635 is divisible by more than 635 and 1, then it is a composite number.
The factors of 635 are as follows:
1, 5, 127, 635
Therefore, since 635 is divisible by more than one and itself, the answer to the
question "Is 635 prime or composite?" is highlighted in blue below.
composite
Is 636 prime or composite?
OK. Now you know that 635 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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