GCD of 855, 538, 639, 218 Calculator

Given Input numbers are 855, 538, 639, 218

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

Divisors of 855

List of positive integer divisors of 855 that divides 855 without a remainder.

1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855

Divisors of 538

List of positive integer divisors of 538 that divides 538 without a remainder.

1, 2, 269, 538

Divisors of 639

List of positive integer divisors of 639 that divides 639 without a remainder.

1, 3, 9, 71, 213, 639

Divisors of 218

List of positive integer divisors of 218 that divides 218 without a remainder.

1, 2, 109, 218

Greatest Common Divisior

We found the divisors of 855, 538, 639, 218 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 855, 538, 639, 218 is 1.

Therefore, GCD of numbers 855, 538, 639, 218 is 1

Given Input Data is 855, 538, 639, 218

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

Prime Factorization of 855 is 3 x 3 x 5 x 19

Prime Factorization of 538 is 2 x 269

Prime Factorization of 639 is 3 x 3 x 71

Prime Factorization of 218 is 2 x 109

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(855, 538) = 459990

GCD(855, 538) = ( 855 x 538 ) / 459990

GCD(855, 538) = 459990 / 459990

GCD(855, 538) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 639

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

LCM(1, 639) = 639

GCD(1, 639) = ( 1 x 639 ) / 639

GCD(1, 639) = 639 / 639

GCD(1, 639) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 218

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

LCM(1, 218) = 218

GCD(1, 218) = ( 1 x 218 ) / 218

GCD(1, 218) = 218 / 218

GCD(1, 218) = 1

GCD of 855, 538, 639, 218 is 1

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• GCD of 483, 652, 375, 683
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1. What is the GCD of 855, 538, 639, 218?

GCD of 855, 538, 639, 218 is 1

2. Where do I get the detailed procedure to find GCD of 855, 538, 639, 218?

You can find a detailed procedure to find GCD of 855, 538, 639, 218 on our page.

3. How to find GCD of 855, 538, 639, 218 on a calculator?

You can find the GCD of 855, 538, 639, 218 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.