GCD of 644, 379, 128 Calculator

Given Input numbers are 644, 379, 128

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

Divisors of 644

List of positive integer divisors of 644 that divides 644 without a remainder.

1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644

Divisors of 379

List of positive integer divisors of 379 that divides 379 without a remainder.

1, 379

Divisors of 128

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

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

Greatest Common Divisior

We found the divisors of 644, 379, 128 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 644, 379, 128 is 1.

Therefore, GCD of numbers 644, 379, 128 is 1

Given Input Data is 644, 379, 128

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

Prime Factorization of 644 is 2 x 2 x 7 x 23

Prime Factorization of 379 is 379

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

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(644, 379) = 244076

GCD(644, 379) = ( 644 x 379 ) / 244076

GCD(644, 379) = 244076 / 244076

GCD(644, 379) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 128

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

LCM(1, 128) = 128

GCD(1, 128) = ( 1 x 128 ) / 128

GCD(1, 128) = 128 / 128

GCD(1, 128) = 1

GCD of 644, 379, 128 is 1

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1. What is the GCD of 644, 379, 128?

GCD of 644, 379, 128 is 1

2. Where do I get the detailed procedure to find GCD of 644, 379, 128?

You can find a detailed procedure to find GCD of 644, 379, 128 on our page.

3. How to find GCD of 644, 379, 128 on a calculator?

You can find the GCD of 644, 379, 128 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.