GCD of 685, 635, 861 Calculator

Given Input numbers are 685, 635, 861

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

Divisors of 685

List of positive integer divisors of 685 that divides 685 without a remainder.

1, 5, 137, 685

Divisors of 635

List of positive integer divisors of 635 that divides 635 without a remainder.

1, 5, 127, 635

Divisors of 861

List of positive integer divisors of 861 that divides 861 without a remainder.

1, 3, 7, 21, 41, 123, 287, 861

Greatest Common Divisior

We found the divisors of 685, 635, 861 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 685, 635, 861 is 1.

Therefore, GCD of numbers 685, 635, 861 is 1

Given Input Data is 685, 635, 861

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

Prime Factorization of 685 is 5 x 137

Prime Factorization of 635 is 5 x 127

Prime Factorization of 861 is 3 x 7 x 41

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(685, 635) = 86995

GCD(685, 635) = ( 685 x 635 ) / 86995

GCD(685, 635) = 434975 / 86995

GCD(685, 635) = 5

Step2:

Here we consider the GCD from the above i.e. 5 as first number and the next as 861

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

LCM(5, 861) = 4305

GCD(5, 861) = ( 5 x 861 ) / 4305

GCD(5, 861) = 4305 / 4305

GCD(5, 861) = 1

GCD of 685, 635, 861 is 1

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1. What is the GCD of 685, 635, 861?

GCD of 685, 635, 861 is 1

2. Where do I get the detailed procedure to find GCD of 685, 635, 861?

You can find a detailed procedure to find GCD of 685, 635, 861 on our page.

3. How to find GCD of 685, 635, 861 on a calculator?

You can find the GCD of 685, 635, 861 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.