To find highest common factor by using prime factorization method is discussed here.

**Step I: **

*Find the prime factorization of each of the given numbers.*

**Step II: **

*The product of all common prime factors is the HCF of the given numbers.*

Let us consider some of the examples to find highest common factor by using prime factorization method.

**1. Find highest common factor (HCF) of 14 and 8 by using prime factorization method.**

*Solution:*

14 = 1 × 2 × 7.

8 = 1 × 2 × 2 × 2.

Common factor of 8 and 14 = 1 and 2.

H.C.F. is the product of lowest powers of factors common to all numbers.

Highest common factor of 8 and 14 = 2.

**2. Find highest common factor (HCF) of 9 and 27 by using prime factorization method.**

*Solution:*

9 = 1 × 3 × 3.

27 = 1 × 3 × 3 × 3.

Common factor of 9 and 27 = 1, 3 and 3.

Highest common factor of 9 and 27 = 3 × 3 = 9.

**3. Find highest common factor (HCF) of 6 and 16 by using prime factorization method.**

*Solution:*

6 = 1 × 2 × 3.

16 = 1 × 2 × 2 × 2 × 2.

Common factor of 6 and 16 = 2.

Highest common factor of 6 and 16 = 2.

**4. Find highest common factor (HCF) of 18 and 24 by using prime factorization method.**

*Solution:*

18 = 1 × 2 × 3 × 3.

24 = 1 × 2 × 2 × 2 × 3.

Common factor of 18 and 24 = 1, 2, 3.

Highest common factor of 18 and 24 = 2 × 3 = 6.

**5. Find highest common factor (HCF) of 12 and 56 by using prime factorization method.**

*Solution:*

12 = 1 × 2 × 2 × 3.

56 = 1 × 2 × 2 × 2 × 7.

Common factor of 12 and 56 = 1, 2, 2.

Highest common factor of 12 and 56 = 2 × 2 = 4.

**● Factors.**

**● Highest Common Factor (H.C.F).**

**● Examples on Highest Common Factor (H.C.F).**

**● Greatest Common Factor (G.C.F).**

**● Examples of Greatest Common Factor (G.C.F).**

**● To find Highest Common Factor by using Prime Factorization Method.**

**● Examples to find Highest Common Factor by using Prime Factorization Method.**

**● To find Highest Common Factor by using Division Method.**

**● Examples to find Highest Common Factor of two numbers by using Division Method.**

**● To find the Highest Common Factor of three numbers by using Division Method.**

**5th Grade Numbers Page ** **5th Grade Math Problems** **From To find Highest Common Factor by using Prime Factorization Method to HOMEPAGE**

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