GCD of 437, 787, 638, 685 Calculator

Given Input numbers are 437, 787, 638, 685

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

Divisors of 437

List of positive integer divisors of 437 that divides 437 without a remainder.

1, 19, 23, 437

Divisors of 787

List of positive integer divisors of 787 that divides 787 without a remainder.

1, 787

Divisors of 638

List of positive integer divisors of 638 that divides 638 without a remainder.

1, 2, 11, 22, 29, 58, 319, 638

Divisors of 685

List of positive integer divisors of 685 that divides 685 without a remainder.

1, 5, 137, 685

Greatest Common Divisior

We found the divisors of 437, 787, 638, 685 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 437, 787, 638, 685 is 1.

Therefore, GCD of numbers 437, 787, 638, 685 is 1

Given Input Data is 437, 787, 638, 685

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

Prime Factorization of 437 is 19 x 23

Prime Factorization of 787 is 787

Prime Factorization of 638 is 2 x 11 x 29

Prime Factorization of 685 is 5 x 137

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(437, 787) = 343919

GCD(437, 787) = ( 437 x 787 ) / 343919

GCD(437, 787) = 343919 / 343919

GCD(437, 787) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 638

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

LCM(1, 638) = 638

GCD(1, 638) = ( 1 x 638 ) / 638

GCD(1, 638) = 638 / 638

GCD(1, 638) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 685

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

LCM(1, 685) = 685

GCD(1, 685) = ( 1 x 685 ) / 685

GCD(1, 685) = 685 / 685

GCD(1, 685) = 1

GCD of 437, 787, 638, 685 is 1

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1. What is the GCD of 437, 787, 638, 685?

GCD of 437, 787, 638, 685 is 1

2. Where do I get the detailed procedure to find GCD of 437, 787, 638, 685?

You can find a detailed procedure to find GCD of 437, 787, 638, 685 on our page.

3. How to find GCD of 437, 787, 638, 685 on a calculator?

You can find the GCD of 437, 787, 638, 685 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.