To determine if 401 is a prime number or a composite number, we simply look at the factors for 401.
If the factors of 401 are only 401 and 1, then we know that 401 is a prime number. Otherwise, 401 is a composite number.
To explain better, if 401 is only divisible by 1 and 401, then it is a prime number, and if 401 is divisible by more than 401 and 1, then it is a composite number.
The factors of 401 are as follows:
1, 401
Therefore, since 401 is divisible by only one and itself, the answer to the
question "Is 401 prime or composite?" is highlighted in blue below.
prime
Is 402 prime or composite?
OK. Now you know that 401 is a prime 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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