To determine if 404 is a prime number or a composite number, we simply look at the factors for 404.
If the factors of 404 are only 404 and 1, then we know that 404 is a prime number. Otherwise, 404 is a composite number.
To explain better, if 404 is only divisible by 1 and 404, then it is a prime number, and if 404 is divisible by more than 404 and 1, then it is a composite number.
The factors of 404 are as follows:
1, 2, 4, 101, 202, 404
Therefore, since 404 is divisible by more than one and itself, the answer to the
question "Is 404 prime or composite?" is highlighted in blue below.
composite
Is 405 prime or composite?
OK. Now you know that 404 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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