GCD of 20, 555, 421, 878 Calculator

Given Input numbers are 20, 555, 421, 878

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

Divisors of 20

List of positive integer divisors of 20 that divides 20 without a remainder.

1, 2, 4, 5, 10, 20

Divisors of 555

List of positive integer divisors of 555 that divides 555 without a remainder.

1, 3, 5, 15, 37, 111, 185, 555

Divisors of 421

List of positive integer divisors of 421 that divides 421 without a remainder.

1, 421

Divisors of 878

List of positive integer divisors of 878 that divides 878 without a remainder.

1, 2, 439, 878

Greatest Common Divisior

We found the divisors of 20, 555, 421, 878 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 20, 555, 421, 878 is 1.

Therefore, GCD of numbers 20, 555, 421, 878 is 1

Given Input Data is 20, 555, 421, 878

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

Prime Factorization of 20 is 2 x 2 x 5

Prime Factorization of 555 is 3 x 5 x 37

Prime Factorization of 421 is 421

Prime Factorization of 878 is 2 x 439

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(20, 555) = 2220

GCD(20, 555) = ( 20 x 555 ) / 2220

GCD(20, 555) = 11100 / 2220

GCD(20, 555) = 5

Step2:

Here we consider the GCD from the above i.e. 5 as first number and the next as 421

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

LCM(5, 421) = 2105

GCD(5, 421) = ( 5 x 421 ) / 2105

GCD(5, 421) = 2105 / 2105

GCD(5, 421) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 878

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

LCM(1, 878) = 878

GCD(1, 878) = ( 1 x 878 ) / 878

GCD(1, 878) = 878 / 878

GCD(1, 878) = 1

GCD of 20, 555, 421, 878 is 1

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• GCD of 58, 935, 321, 892
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1. What is the GCD of 20, 555, 421, 878?

GCD of 20, 555, 421, 878 is 1

2. Where do I get the detailed procedure to find GCD of 20, 555, 421, 878?

You can find a detailed procedure to find GCD of 20, 555, 421, 878 on our page.

3. How to find GCD of 20, 555, 421, 878 on a calculator?

You can find the GCD of 20, 555, 421, 878 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.