GCD of 681, 658, 85, 438 Calculator

Given Input numbers are 681, 658, 85, 438

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

Divisors of 681

List of positive integer divisors of 681 that divides 681 without a remainder.

1, 3, 227, 681

Divisors of 658

List of positive integer divisors of 658 that divides 658 without a remainder.

1, 2, 7, 14, 47, 94, 329, 658

Divisors of 85

List of positive integer divisors of 85 that divides 85 without a remainder.

1, 5, 17, 85

Divisors of 438

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

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

Greatest Common Divisior

We found the divisors of 681, 658, 85, 438 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 681, 658, 85, 438 is 1.

Therefore, GCD of numbers 681, 658, 85, 438 is 1

Given Input Data is 681, 658, 85, 438

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

Prime Factorization of 681 is 3 x 227

Prime Factorization of 658 is 2 x 7 x 47

Prime Factorization of 85 is 5 x 17

Prime Factorization of 438 is 2 x 3 x 73

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(681, 658) = 448098

GCD(681, 658) = ( 681 x 658 ) / 448098

GCD(681, 658) = 448098 / 448098

GCD(681, 658) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 85

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

LCM(1, 85) = 85

GCD(1, 85) = ( 1 x 85 ) / 85

GCD(1, 85) = 85 / 85

GCD(1, 85) = 1

Step3:

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

GCD of 681, 658, 85, 438 is 1

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1. What is the GCD of 681, 658, 85, 438?

GCD of 681, 658, 85, 438 is 1

2. Where do I get the detailed procedure to find GCD of 681, 658, 85, 438?

You can find a detailed procedure to find GCD of 681, 658, 85, 438 on our page.

3. How to find GCD of 681, 658, 85, 438 on a calculator?

You can find the GCD of 681, 658, 85, 438 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.