GCD of 645, 579, 964, 428 Calculator

Given Input numbers are 645, 579, 964, 428

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

Divisors of 645

List of positive integer divisors of 645 that divides 645 without a remainder.

1, 3, 5, 15, 43, 129, 215, 645

Divisors of 579

List of positive integer divisors of 579 that divides 579 without a remainder.

1, 3, 193, 579

Divisors of 964

List of positive integer divisors of 964 that divides 964 without a remainder.

1, 2, 4, 241, 482, 964

Divisors of 428

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

1, 2, 4, 107, 214, 428

Greatest Common Divisior

We found the divisors of 645, 579, 964, 428 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 645, 579, 964, 428 is 1.

Therefore, GCD of numbers 645, 579, 964, 428 is 1

Given Input Data is 645, 579, 964, 428

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

Prime Factorization of 645 is 3 x 5 x 43

Prime Factorization of 579 is 3 x 193

Prime Factorization of 964 is 2 x 2 x 241

Prime Factorization of 428 is 2 x 2 x 107

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(645, 579) = 124485

GCD(645, 579) = ( 645 x 579 ) / 124485

GCD(645, 579) = 373455 / 124485

GCD(645, 579) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 964

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

LCM(3, 964) = 2892

GCD(3, 964) = ( 3 x 964 ) / 2892

GCD(3, 964) = 2892 / 2892

GCD(3, 964) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 428

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

LCM(1, 428) = 428

GCD(1, 428) = ( 1 x 428 ) / 428

GCD(1, 428) = 428 / 428

GCD(1, 428) = 1

GCD of 645, 579, 964, 428 is 1

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1. What is the GCD of 645, 579, 964, 428?

GCD of 645, 579, 964, 428 is 1

2. Where do I get the detailed procedure to find GCD of 645, 579, 964, 428?

You can find a detailed procedure to find GCD of 645, 579, 964, 428 on our page.

3. How to find GCD of 645, 579, 964, 428 on a calculator?

You can find the GCD of 645, 579, 964, 428 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.