GCD of 691, 635, 643, 813 Calculator

Given Input numbers are 691, 635, 643, 813

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 635

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

1, 5, 127, 635

Divisors of 643

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

1, 643

Divisors of 813

List of positive integer divisors of 813 that divides 813 without a remainder.

1, 3, 271, 813

Greatest Common Divisior

We found the divisors of 691, 635, 643, 813 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 691, 635, 643, 813 is 1.

Therefore, GCD of numbers 691, 635, 643, 813 is 1

Given Input Data is 691, 635, 643, 813

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

Prime Factorization of 691 is 691

Prime Factorization of 635 is 5 x 127

Prime Factorization of 643 is 643

Prime Factorization of 813 is 3 x 271

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, 635) = 438785

GCD(691, 635) = ( 691 x 635 ) / 438785

GCD(691, 635) = 438785 / 438785

GCD(691, 635) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 643

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

LCM(1, 643) = 643

GCD(1, 643) = ( 1 x 643 ) / 643

GCD(1, 643) = 643 / 643

GCD(1, 643) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 813

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

LCM(1, 813) = 813

GCD(1, 813) = ( 1 x 813 ) / 813

GCD(1, 813) = 813 / 813

GCD(1, 813) = 1

GCD of 691, 635, 643, 813 is 1

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1. What is the GCD of 691, 635, 643, 813?

GCD of 691, 635, 643, 813 is 1

2. Where do I get the detailed procedure to find GCD of 691, 635, 643, 813?

You can find a detailed procedure to find GCD of 691, 635, 643, 813 on our page.

3. How to find GCD of 691, 635, 643, 813 on a calculator?

You can find the GCD of 691, 635, 643, 813 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.