To determine if 9815 is a prime number or a composite number, we simply look at the factors for 9815.
If the factors of 9815 are only 9815 and 1, then we know that 9815 is a prime number. Otherwise, 9815 is a composite number.
To explain better, if 9815 is only divisible by 1 and 9815, then it is a prime number, and if 9815 is divisible by more than 9815 and 1, then it is a composite number.
The factors of 9815 are as follows:
1, 5, 13, 65, 151, 755, 1963, 9815
Therefore, since 9815 is divisible by more than one and itself, the answer to the
question "Is 9815 prime or composite?" is highlighted in blue below.
composite
Is 9816 prime or composite?
OK. Now you know that 9815 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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