To determine if 805 is a prime number or a composite number, we simply look at the factors for 805.
If the factors of 805 are only 805 and 1, then we know that 805 is a prime number. Otherwise, 805 is a composite number.
To explain better, if 805 is only divisible by 1 and 805, then it is a prime number, and if 805 is divisible by more than 805 and 1, then it is a composite number.
The factors of 805 are as follows:
1, 5, 7, 23, 35, 115, 161, 805
Therefore, since 805 is divisible by more than one and itself, the answer to the
question "Is 805 prime or composite?" is highlighted in blue below.
composite
Is 806 prime or composite?
OK. Now you know that 805 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.
|
|
