Definition:Composite Number

Definition
A composite number $c$ is a positive integer that has more than two positive divisors.

That is, an integer greater than $1$ which is not prime is defined as composite.



Extension to Negative Integers
The definition of a composite number can be extended to the negative integers, as follows:

Zero
$0$ is not considered composite.

$1$ is also a special case - it is neither prime nor composite.

All of the other positive integers are either prime or composite.