To determine if 3405 is a prime number or a composite number, we simply look at the factors for 3405.
If the factors of 3405 are only 3405 and 1, then we know that 3405 is a prime number. Otherwise, 3405 is a composite number.
To explain better, if 3405 is only divisible by 1 and 3405, then it is a prime number, and if 3405 is divisible by more than 3405 and 1, then it is a composite number.
The factors of 3405 are as follows:
1, 3, 5, 15, 227, 681, 1135, 3405
Therefore, since 3405 is divisible by more than one and itself, the answer to the
question "Is 3405 prime or composite?" is highlighted in blue below.
composite
Is 3406 prime or composite?
OK. Now you know that 3405 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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