GCD of 920, 643, 861 Calculator

Given Input numbers are 920, 643, 861

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

Divisors of 920

List of positive integer divisors of 920 that divides 920 without a remainder.

1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920

Divisors of 643

List of positive integer divisors of 643 that divides 643 without a remainder.

1, 643

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 920, 643, 861 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 920, 643, 861 is 1.

Therefore, GCD of numbers 920, 643, 861 is 1

Given Input Data is 920, 643, 861

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

Prime Factorization of 920 is 2 x 2 x 2 x 5 x 23

Prime Factorization of 643 is 643

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(920, 643) = 591560

GCD(920, 643) = ( 920 x 643 ) / 591560

GCD(920, 643) = 591560 / 591560

GCD(920, 643) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 861

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

LCM(1, 861) = 861

GCD(1, 861) = ( 1 x 861 ) / 861

GCD(1, 861) = 861 / 861

GCD(1, 861) = 1

GCD of 920, 643, 861 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 430, 797, 635
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• GCD of 469, 157, 852
• GCD of 479, 861, 627
• GCD of 582, 221, 850

1. What is the GCD of 920, 643, 861?

GCD of 920, 643, 861 is 1

2. Where do I get the detailed procedure to find GCD of 920, 643, 861?

You can find a detailed procedure to find GCD of 920, 643, 861 on our page.

3. How to find GCD of 920, 643, 861 on a calculator?

You can find the GCD of 920, 643, 861 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.