Definition: A composite number is an integer than is composed of integer factors. It is the opposite of a prime number.

A composite number is one that can be formed by multiplying some integers* together. For example
18 is composite because
18 = 2 × 3 × 3

It follows that composite numbers are never prime numbers. For more see
Prime numbers.
* The integers must be greater than one.

- What are scalars?
- Real numbers
- Integers
- Natural Numbers
- Positive numbers
- Negative numbers
- The uses of negative numbers
- Scientific notation (normal form)
- Complex numbers
- Imaginary numbers

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