GCD of 428, 857, 556, 424 Calculator

Given Input numbers are 428, 857, 556, 424

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

Divisors of 428

List of positive integer divisors of 428 that divides 428 without a remainder.

1, 2, 4, 107, 214, 428

Divisors of 857

List of positive integer divisors of 857 that divides 857 without a remainder.

1, 857

Divisors of 556

List of positive integer divisors of 556 that divides 556 without a remainder.

1, 2, 4, 139, 278, 556

Divisors of 424

List of positive integer divisors of 424 that divides 424 without a remainder.

1, 2, 4, 8, 53, 106, 212, 424

Greatest Common Divisior

We found the divisors of 428, 857, 556, 424 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 428, 857, 556, 424 is 1.

Therefore, GCD of numbers 428, 857, 556, 424 is 1

Given Input Data is 428, 857, 556, 424

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

Prime Factorization of 428 is 2 x 2 x 107

Prime Factorization of 857 is 857

Prime Factorization of 556 is 2 x 2 x 139

Prime Factorization of 424 is 2 x 2 x 2 x 53

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(428, 857) = 366796

GCD(428, 857) = ( 428 x 857 ) / 366796

GCD(428, 857) = 366796 / 366796

GCD(428, 857) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 556

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

LCM(1, 556) = 556

GCD(1, 556) = ( 1 x 556 ) / 556

GCD(1, 556) = 556 / 556

GCD(1, 556) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 424

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

LCM(1, 424) = 424

GCD(1, 424) = ( 1 x 424 ) / 424

GCD(1, 424) = 424 / 424

GCD(1, 424) = 1

GCD of 428, 857, 556, 424 is 1

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1. What is the GCD of 428, 857, 556, 424?

GCD of 428, 857, 556, 424 is 1

2. Where do I get the detailed procedure to find GCD of 428, 857, 556, 424?

You can find a detailed procedure to find GCD of 428, 857, 556, 424 on our page.

3. How to find GCD of 428, 857, 556, 424 on a calculator?

You can find the GCD of 428, 857, 556, 424 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.