To determine if 809 is a prime number or a composite number, we simply look at the factors for 809.
If the factors of 809 are only 809 and 1, then we know that 809 is a prime number. Otherwise, 809 is a composite number.
To explain better, if 809 is only divisible by 1 and 809, then it is a prime number, and if 809 is divisible by more than 809 and 1, then it is a composite number.
The factors of 809 are as follows:
1, 809
Therefore, since 809 is divisible by only one and itself, the answer to the
question "Is 809 prime or composite?" is highlighted in blue below.
prime
Is 810 prime or composite?
OK. Now you know that 809 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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