GCD of 438, 431, 857, 129 Calculator

Given Input numbers are 438, 431, 857, 129

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

Divisors of 438

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

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

Divisors of 431

List of positive integer divisors of 431 that divides 431 without a remainder.

1, 431

Divisors of 857

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

1, 857

Divisors of 129

List of positive integer divisors of 129 that divides 129 without a remainder.

1, 3, 43, 129

Greatest Common Divisior

We found the divisors of 438, 431, 857, 129 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 438, 431, 857, 129 is 1.

Therefore, GCD of numbers 438, 431, 857, 129 is 1

Given Input Data is 438, 431, 857, 129

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

Prime Factorization of 438 is 2 x 3 x 73

Prime Factorization of 431 is 431

Prime Factorization of 857 is 857

Prime Factorization of 129 is 3 x 43

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(438, 431) = 188778

GCD(438, 431) = ( 438 x 431 ) / 188778

GCD(438, 431) = 188778 / 188778

GCD(438, 431) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 857

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

LCM(1, 857) = 857

GCD(1, 857) = ( 1 x 857 ) / 857

GCD(1, 857) = 857 / 857

GCD(1, 857) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 129

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

LCM(1, 129) = 129

GCD(1, 129) = ( 1 x 129 ) / 129

GCD(1, 129) = 129 / 129

GCD(1, 129) = 1

GCD of 438, 431, 857, 129 is 1

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1. What is the GCD of 438, 431, 857, 129?

GCD of 438, 431, 857, 129 is 1

2. Where do I get the detailed procedure to find GCD of 438, 431, 857, 129?

You can find a detailed procedure to find GCD of 438, 431, 857, 129 on our page.

3. How to find GCD of 438, 431, 857, 129 on a calculator?

You can find the GCD of 438, 431, 857, 129 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.