GCD of 80, 9, 77, 72 Calculator

Given Input numbers are 80, 9, 77, 72

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

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

Divisors of 9

List of positive integer divisors of 9 that divides 9 without a remainder.

1, 3, 9

Divisors of 77

List of positive integer divisors of 77 that divides 77 without a remainder.

1, 7, 11, 77

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

Greatest Common Divisior

We found the divisors of 80, 9, 77, 72 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 80, 9, 77, 72 is 1.

Therefore, GCD of numbers 80, 9, 77, 72 is 1

Given Input Data is 80, 9, 77, 72

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

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

Prime Factorization of 9 is 3 x 3

Prime Factorization of 77 is 7 x 11

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

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(80, 9) = 720

GCD(80, 9) = ( 80 x 9 ) / 720

GCD(80, 9) = 720 / 720

GCD(80, 9) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 77

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

LCM(1, 77) = 77

GCD(1, 77) = ( 1 x 77 ) / 77

GCD(1, 77) = 77 / 77

GCD(1, 77) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 72

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

LCM(1, 72) = 72

GCD(1, 72) = ( 1 x 72 ) / 72

GCD(1, 72) = 72 / 72

GCD(1, 72) = 1

GCD of 80, 9, 77, 72 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 81, 9, 62, 50
• GCD of 80, 2, 83, 62
• GCD of 44, 5, 98, 63
• GCD of 42, 4, 59, 10
• GCD of 84, 5, 59, 93

1. What is the GCD of 80, 9, 77, 72?

GCD of 80, 9, 77, 72 is 1

2. Where do I get the detailed procedure to find GCD of 80, 9, 77, 72?

You can find a detailed procedure to find GCD of 80, 9, 77, 72 on our page.

3. How to find GCD of 80, 9, 77, 72 on a calculator?

You can find the GCD of 80, 9, 77, 72 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.