Natural numbers having factors in addition to one and itself are called ______ numbers.
composite
A prime number is a natural number greater than one, whose only factors are one and the number itself.
A composite number is a natural number which has more than 2 factors.
For example 3, 13, 29 are prime numbers as they have only 2 factors, 1 and the number itself.
15, 27 are composite numbers because they have more than 2 factors.