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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.