A composite number is a whole number that has more than two factors. This means it can be divided evenly by numbers other than just 1 and itself.
The number 6 is a composite number because its factors are 1, 2, 3, and 6. It can be divided evenly by 2 and 3, not just 1 and 6. Another example is 10, which has factors 1, 2, 5, and 10.