GCD of 855, 124, 81, 972 Calculator

Given Input numbers are 855, 124, 81, 972

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

Divisors of 855

List of positive integer divisors of 855 that divides 855 without a remainder.

1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855

Divisors of 124

List of positive integer divisors of 124 that divides 124 without a remainder.

1, 2, 4, 31, 62, 124

Divisors of 81

List of positive integer divisors of 81 that divides 81 without a remainder.

1, 3, 9, 27, 81

Divisors of 972

List of positive integer divisors of 972 that divides 972 without a remainder.

1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 972

Greatest Common Divisior

We found the divisors of 855, 124, 81, 972 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 855, 124, 81, 972 is 1.

Therefore, GCD of numbers 855, 124, 81, 972 is 1

Given Input Data is 855, 124, 81, 972

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

Prime Factorization of 855 is 3 x 3 x 5 x 19

Prime Factorization of 124 is 2 x 2 x 31

Prime Factorization of 81 is 3 x 3 x 3 x 3

Prime Factorization of 972 is 2 x 2 x 3 x 3 x 3 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(855, 124) = 106020

GCD(855, 124) = ( 855 x 124 ) / 106020

GCD(855, 124) = 106020 / 106020

GCD(855, 124) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 81

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

LCM(1, 81) = 81

GCD(1, 81) = ( 1 x 81 ) / 81

GCD(1, 81) = 81 / 81

GCD(1, 81) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 972

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

LCM(1, 972) = 972

GCD(1, 972) = ( 1 x 972 ) / 972

GCD(1, 972) = 972 / 972

GCD(1, 972) = 1

GCD of 855, 124, 81, 972 is 1

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• GCD of 313, 828, 17, 922

1. What is the GCD of 855, 124, 81, 972?

GCD of 855, 124, 81, 972 is 1

2. Where do I get the detailed procedure to find GCD of 855, 124, 81, 972?

You can find a detailed procedure to find GCD of 855, 124, 81, 972 on our page.

3. How to find GCD of 855, 124, 81, 972 on a calculator?

You can find the GCD of 855, 124, 81, 972 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.