# Greatest Common Factor of 12, 15, 18

GCF of two or more numbers Calculator allows you to quickly calculate the GCF of 12, 15, 18 i.e. 3 largest integer that divides all the numbers equally.

Greatest common factor (GCF) of 12, 15, 18 is 3.

GCF(12, 15, 18) = 3

## GCF of 12, 15, 18

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

GCF of:

### Greatest Common Factor (GCF) of 12,15,18 By Common Division

 3 12, 15, 18 4, 5, 6

∴ So the GCF of the given numbers is 3 = 3

### Greatest Common Factor (GCF) By Matching Biggest Common Factor Method

Factors of 12

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

Factors of 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

Greatest Common Factor

We found the factors 12,15,18 . The biggest common factor number is the GCF number.
So the greatest common factor 12,15,18 is 3.

### GCF of two or more Numbers Calculation Examples

Here are some samples of GCF of two or more Numbers calculations.

### Frequently Asked Questions on GCF of 12, 15, 18

1. What is the GCF of 12, 15, 18?

Answer: GCF of 12, 15, 18 is 3.

2. How to Find the GCF of 12, 15, 18

Answer: Greatest Common Factor(GCF) of 12, 15, 18 = 3

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(12, 15, 18) = 3.