GCD of 421, 128, 436, 854 Calculator

Given Input numbers are 421, 128, 436, 854

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

Divisors of 421

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

1, 421

Divisors of 128

List of positive integer divisors of 128 that divides 128 without a remainder.

1, 2, 4, 8, 16, 32, 64, 128

Divisors of 436

List of positive integer divisors of 436 that divides 436 without a remainder.

1, 2, 4, 109, 218, 436

Divisors of 854

List of positive integer divisors of 854 that divides 854 without a remainder.

1, 2, 7, 14, 61, 122, 427, 854

Greatest Common Divisior

We found the divisors of 421, 128, 436, 854 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 421, 128, 436, 854 is 1.

Therefore, GCD of numbers 421, 128, 436, 854 is 1

Given Input Data is 421, 128, 436, 854

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

Prime Factorization of 421 is 421

Prime Factorization of 128 is 2 x 2 x 2 x 2 x 2 x 2 x 2

Prime Factorization of 436 is 2 x 2 x 109

Prime Factorization of 854 is 2 x 7 x 61

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(421, 128) = 53888

GCD(421, 128) = ( 421 x 128 ) / 53888

GCD(421, 128) = 53888 / 53888

GCD(421, 128) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 436

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

LCM(1, 436) = 436

GCD(1, 436) = ( 1 x 436 ) / 436

GCD(1, 436) = 436 / 436

GCD(1, 436) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 854

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

LCM(1, 854) = 854

GCD(1, 854) = ( 1 x 854 ) / 854

GCD(1, 854) = 854 / 854

GCD(1, 854) = 1

GCD of 421, 128, 436, 854 is 1

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1. What is the GCD of 421, 128, 436, 854?

GCD of 421, 128, 436, 854 is 1

2. Where do I get the detailed procedure to find GCD of 421, 128, 436, 854?

You can find a detailed procedure to find GCD of 421, 128, 436, 854 on our page.

3. How to find GCD of 421, 128, 436, 854 on a calculator?

You can find the GCD of 421, 128, 436, 854 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.