To determine if 7405 is a prime number or a composite number, we simply look at the factors for 7405.
If the factors of 7405 are only 7405 and 1, then we know that 7405 is a prime number. Otherwise, 7405 is a composite number.
To explain better, if 7405 is only divisible by 1 and 7405, then it is a prime number, and if 7405 is divisible by more than 7405 and 1, then it is a composite number.
The factors of 7405 are as follows:
1, 5, 1481, 7405
Therefore, since 7405 is divisible by more than one and itself, the answer to the
question "Is 7405 prime or composite?" is highlighted in blue below.
composite
Is 7406 prime or composite?
OK. Now you know that 7405 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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