A Natural Number is called a **Composite Number**
if it is not a Prime Number.

**Composite Numbers** starts at Number One and continue to forever; here is an example, 1 to 20: 1, 4, 6, 8, 9, 10, 12,
14, 15, 16, 18, 20, ... infinity. Notices numbers 2, 3, 5, 7, 11, 13, 17, 19 ...
are not shown above because they are Prime Numbers. To see what numbers between 1 and
1000 are composite numbers, use he composite number calculator.

Example Composite Numbers

1, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, ... ∞.

1, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, ... ∞.

Please read! **To use this calculator is easy. Enter any number 1 to 1000,
and the calculator will determine if it is a composite number. **

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