GCD of 128, 664, 477, 636 Calculator

Given Input numbers are 128, 664, 477, 636

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

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 664

List of positive integer divisors of 664 that divides 664 without a remainder.

1, 2, 4, 8, 83, 166, 332, 664

Divisors of 477

List of positive integer divisors of 477 that divides 477 without a remainder.

1, 3, 9, 53, 159, 477

Divisors of 636

List of positive integer divisors of 636 that divides 636 without a remainder.

1, 2, 3, 4, 6, 12, 53, 106, 159, 212, 318, 636

Greatest Common Divisior

We found the divisors of 128, 664, 477, 636 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 128, 664, 477, 636 is 1.

Therefore, GCD of numbers 128, 664, 477, 636 is 1

Given Input Data is 128, 664, 477, 636

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

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

Prime Factorization of 664 is 2 x 2 x 2 x 83

Prime Factorization of 477 is 3 x 3 x 53

Prime Factorization of 636 is 2 x 2 x 3 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(128, 664) = 10624

GCD(128, 664) = ( 128 x 664 ) / 10624

GCD(128, 664) = 84992 / 10624

GCD(128, 664) = 8

Step2:

Here we consider the GCD from the above i.e. 8 as first number and the next as 477

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

LCM(8, 477) = 3816

GCD(8, 477) = ( 8 x 477 ) / 3816

GCD(8, 477) = 3816 / 3816

GCD(8, 477) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 636

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

LCM(1, 636) = 636

GCD(1, 636) = ( 1 x 636 ) / 636

GCD(1, 636) = 636 / 636

GCD(1, 636) = 1

GCD of 128, 664, 477, 636 is 1

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1. What is the GCD of 128, 664, 477, 636?

GCD of 128, 664, 477, 636 is 1

2. Where do I get the detailed procedure to find GCD of 128, 664, 477, 636?

You can find a detailed procedure to find GCD of 128, 664, 477, 636 on our page.

3. How to find GCD of 128, 664, 477, 636 on a calculator?

You can find the GCD of 128, 664, 477, 636 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.