To determine if 2405 is a prime number or a composite number, we simply look at the factors for 2405.
If the factors of 2405 are only 2405 and 1, then we know that 2405 is a prime number. Otherwise, 2405 is a composite number.
To explain better, if 2405 is only divisible by 1 and 2405, then it is a prime number, and if 2405 is divisible by more than 2405 and 1, then it is a composite number.
The factors of 2405 are as follows:
1, 5, 13, 37, 65, 185, 481, 2405
Therefore, since 2405 is divisible by more than one and itself, the answer to the
question "Is 2405 prime or composite?" is highlighted in blue below.
composite
Is 2406 prime or composite?
OK. Now you know that 2405 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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