GCD of 847, 845, 81, 868 Calculator

Given Input numbers are 847, 845, 81, 868

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

Divisors of 847

List of positive integer divisors of 847 that divides 847 without a remainder.

1, 7, 11, 77, 121, 847

Divisors of 845

List of positive integer divisors of 845 that divides 845 without a remainder.

1, 5, 13, 65, 169, 845

Divisors of 81

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

1, 3, 9, 27, 81

Divisors of 868

List of positive integer divisors of 868 that divides 868 without a remainder.

1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868

Greatest Common Divisior

We found the divisors of 847, 845, 81, 868 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 847, 845, 81, 868 is 1.

Therefore, GCD of numbers 847, 845, 81, 868 is 1

Given Input Data is 847, 845, 81, 868

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

Prime Factorization of 847 is 7 x 11 x 11

Prime Factorization of 845 is 5 x 13 x 13

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

Prime Factorization of 868 is 2 x 2 x 7 x 31

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(847, 845) = 715715

GCD(847, 845) = ( 847 x 845 ) / 715715

GCD(847, 845) = 715715 / 715715

GCD(847, 845) = 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 868

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

LCM(1, 868) = 868

GCD(1, 868) = ( 1 x 868 ) / 868

GCD(1, 868) = 868 / 868

GCD(1, 868) = 1

GCD of 847, 845, 81, 868 is 1

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1. What is the GCD of 847, 845, 81, 868?

GCD of 847, 845, 81, 868 is 1

2. Where do I get the detailed procedure to find GCD of 847, 845, 81, 868?

You can find a detailed procedure to find GCD of 847, 845, 81, 868 on our page.

3. How to find GCD of 847, 845, 81, 868 on a calculator?

You can find the GCD of 847, 845, 81, 868 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.