GCD of 561, 679, 891, 636 Calculator

Given Input numbers are 561, 679, 891, 636

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

Divisors of 561

List of positive integer divisors of 561 that divides 561 without a remainder.

1, 3, 11, 17, 33, 51, 187, 561

Divisors of 679

List of positive integer divisors of 679 that divides 679 without a remainder.

1, 7, 97, 679

Divisors of 891

List of positive integer divisors of 891 that divides 891 without a remainder.

1, 3, 9, 11, 27, 33, 81, 99, 297, 891

Divisors of 636

List of positive integer divisors of 636 that divides 636 without a remainder.

1, 2, 3, 4, 6, 12, 53, 106, 159, 212, 318, 636

Greatest Common Divisior

We found the divisors of 561, 679, 891, 636 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 561, 679, 891, 636 is 1.

Therefore, GCD of numbers 561, 679, 891, 636 is 1

Given Input Data is 561, 679, 891, 636

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

Prime Factorization of 561 is 3 x 11 x 17

Prime Factorization of 679 is 7 x 97

Prime Factorization of 891 is 3 x 3 x 3 x 3 x 11

Prime Factorization of 636 is 2 x 2 x 3 x 53

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(561, 679) = 380919

GCD(561, 679) = ( 561 x 679 ) / 380919

GCD(561, 679) = 380919 / 380919

GCD(561, 679) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 891

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

LCM(1, 891) = 891

GCD(1, 891) = ( 1 x 891 ) / 891

GCD(1, 891) = 891 / 891

GCD(1, 891) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 636

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

LCM(1, 636) = 636

GCD(1, 636) = ( 1 x 636 ) / 636

GCD(1, 636) = 636 / 636

GCD(1, 636) = 1

GCD of 561, 679, 891, 636 is 1

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1. What is the GCD of 561, 679, 891, 636?

GCD of 561, 679, 891, 636 is 1

2. Where do I get the detailed procedure to find GCD of 561, 679, 891, 636?

You can find a detailed procedure to find GCD of 561, 679, 891, 636 on our page.

3. How to find GCD of 561, 679, 891, 636 on a calculator?

You can find the GCD of 561, 679, 891, 636 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.