GCD of 691, 445, 438, 811 Calculator

Given Input numbers are 691, 445, 438, 811

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 445

List of positive integer divisors of 445 that divides 445 without a remainder.

1, 5, 89, 445

Divisors of 438

List of positive integer divisors of 438 that divides 438 without a remainder.

1, 2, 3, 6, 73, 146, 219, 438

Divisors of 811

List of positive integer divisors of 811 that divides 811 without a remainder.

1, 811

Greatest Common Divisior

We found the divisors of 691, 445, 438, 811 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 691, 445, 438, 811 is 1.

Therefore, GCD of numbers 691, 445, 438, 811 is 1

Given Input Data is 691, 445, 438, 811

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

Prime Factorization of 691 is 691

Prime Factorization of 445 is 5 x 89

Prime Factorization of 438 is 2 x 3 x 73

Prime Factorization of 811 is 811

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, 445) = 307495

GCD(691, 445) = ( 691 x 445 ) / 307495

GCD(691, 445) = 307495 / 307495

GCD(691, 445) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 438

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

LCM(1, 438) = 438

GCD(1, 438) = ( 1 x 438 ) / 438

GCD(1, 438) = 438 / 438

GCD(1, 438) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 811

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

LCM(1, 811) = 811

GCD(1, 811) = ( 1 x 811 ) / 811

GCD(1, 811) = 811 / 811

GCD(1, 811) = 1

GCD of 691, 445, 438, 811 is 1

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1. What is the GCD of 691, 445, 438, 811?

GCD of 691, 445, 438, 811 is 1

2. Where do I get the detailed procedure to find GCD of 691, 445, 438, 811?

You can find a detailed procedure to find GCD of 691, 445, 438, 811 on our page.

3. How to find GCD of 691, 445, 438, 811 on a calculator?

You can find the GCD of 691, 445, 438, 811 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.