# Which factors are not included in the prime factorization of a composite number?

Composite numbers have more than 2 factors apart from 1 and the number itself.

## Answer: Factors that are not included in the prime factorization of a composite number are 1, the number itself and the other composite factors.

The prime factorization of a number means to express the number as the product of its prime factors.

**Explanation:**

We do not include any composite numbers and also the number 1 as it is not a prime number.

Let us consider the number 4.

The factors of 4 are 1, 2 and 4

We do not include 1 and 4 in the prime factorization of 4.

Prime factorization of 4 is 2 × 2