GCD of 72, 12, 79, 80 Calculator

Given Input numbers are 72, 12, 79, 80

To find the GCD of numbers using factoring list out all the divisors of each number

Divisors of 72

List of positive integer divisors of 72 that divides 72 without a remainder.

1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72

Divisors of 12

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

1, 2, 3, 4, 6, 12

Divisors of 79

List of positive integer divisors of 79 that divides 79 without a remainder.

1, 79

Divisors of 80

List of positive integer divisors of 80 that divides 80 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Greatest Common Divisior

We found the divisors of 72, 12, 79, 80 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 72, 12, 79, 80 is 1.

Therefore, GCD of numbers 72, 12, 79, 80 is 1

Given Input Data is 72, 12, 79, 80

Make a list of Prime Factors of all the given numbers initially

Prime Factorization of 72 is 2 x 2 x 2 x 3 x 3

Prime Factorization of 12 is 2 x 2 x 3

Prime Factorization of 79 is 79

Prime Factorization of 80 is 2 x 2 x 2 x 2 x 5

The above numbers do not have any common prime factor. So GCD is 1

Step1:

Let's calculate the GCD of first two numbers

The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)

LCM(72, 12) = 72

GCD(72, 12) = ( 72 x 12 ) / 72

GCD(72, 12) = 864 / 72

GCD(72, 12) = 12

Step2:

Here we consider the GCD from the above i.e. 12 as first number and the next as 79

The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)

LCM(12, 79) = 948

GCD(12, 79) = ( 12 x 79 ) / 948

GCD(12, 79) = 948 / 948

GCD(12, 79) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 80

The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)

LCM(1, 80) = 80

GCD(1, 80) = ( 1 x 80 ) / 80

GCD(1, 80) = 80 / 80

GCD(1, 80) = 1

GCD of 72, 12, 79, 80 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 71, 35, 23, 90
• GCD of 53, 38, 26, 46
• GCD of 95, 81, 25, 59
• GCD of 24, 34, 28, 35
• GCD of 47, 28, 14, 31

1. What is the GCD of 72, 12, 79, 80?

GCD of 72, 12, 79, 80 is 1

2. Where do I get the detailed procedure to find GCD of 72, 12, 79, 80?

You can find a detailed procedure to find GCD of 72, 12, 79, 80 on our page.

3. How to find GCD of 72, 12, 79, 80 on a calculator?

You can find the GCD of 72, 12, 79, 80 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.