# What is the GCF of 9, 12, 15, 18 & 36?

getcalc.com's HCF or GCF calculator & step by step work to find what is GCF of 9, 12, 15, 18 and 36.

GCF(9, 12, 15, 18, 36) = 3

The Greatest or Highest Common Factor 3 divides each one of the integer of this group. By using this GCF calculator & the work with steps, grade school students, teachers or parents can verify the results or the workout for HCF of 9, 12, 15, 18 & 36.

## How to find HCF(9, 12, 15, 18, 36)?

The below is the step by step work for how to find what is the GCF of five numbers 9, 12, 15, 18 & 36.

** Problem & Workout** :

step 1 Address the method, input parameters & values

Integers: 9, 12, 15, 18, 36

find gcf (9, 12, 15, . . . . , 36) = ?

step 2 Find the prime factors of all integers of the group

9 = 3 x 3

12 = 2 x 2 x 3

15 = 3 x 5

18 = 2 x 3 x 3

36 = 2 x 2 x 3 x 3

step 3The common prime factor or the product of all common prime factors between all integers is the highest common factor of this group of integers (9, 12, 15, 18 & 36).

GCF(9, 12, 15, 18, 36) = 3