GCD of 691, 556, 86, 621 Calculator

Given Input numbers are 691, 556, 86, 621

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

Divisors of 691

List of positive integer divisors of 691 that divides 691 without a remainder.

1, 691

Divisors of 556

List of positive integer divisors of 556 that divides 556 without a remainder.

1, 2, 4, 139, 278, 556

Divisors of 86

List of positive integer divisors of 86 that divides 86 without a remainder.

1, 2, 43, 86

Divisors of 621

List of positive integer divisors of 621 that divides 621 without a remainder.

1, 3, 9, 23, 27, 69, 207, 621

Greatest Common Divisior

We found the divisors of 691, 556, 86, 621 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 691, 556, 86, 621 is 1.

Therefore, GCD of numbers 691, 556, 86, 621 is 1

Given Input Data is 691, 556, 86, 621

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

Prime Factorization of 691 is 691

Prime Factorization of 556 is 2 x 2 x 139

Prime Factorization of 86 is 2 x 43

Prime Factorization of 621 is 3 x 3 x 3 x 23

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(691, 556) = 384196

GCD(691, 556) = ( 691 x 556 ) / 384196

GCD(691, 556) = 384196 / 384196

GCD(691, 556) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 86

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

LCM(1, 86) = 86

GCD(1, 86) = ( 1 x 86 ) / 86

GCD(1, 86) = 86 / 86

GCD(1, 86) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 621

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

LCM(1, 621) = 621

GCD(1, 621) = ( 1 x 621 ) / 621

GCD(1, 621) = 621 / 621

GCD(1, 621) = 1

GCD of 691, 556, 86, 621 is 1

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1. What is the GCD of 691, 556, 86, 621?

GCD of 691, 556, 86, 621 is 1

2. Where do I get the detailed procedure to find GCD of 691, 556, 86, 621?

You can find a detailed procedure to find GCD of 691, 556, 86, 621 on our page.

3. How to find GCD of 691, 556, 86, 621 on a calculator?

You can find the GCD of 691, 556, 86, 621 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.