GCD of 645, 633, 405, 437 Calculator

Given Input numbers are 645, 633, 405, 437

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 633

List of positive integer divisors of 633 that divides 633 without a remainder.

1, 3, 211, 633

Divisors of 405

List of positive integer divisors of 405 that divides 405 without a remainder.

1, 3, 5, 9, 15, 27, 45, 81, 135, 405

Divisors of 437

List of positive integer divisors of 437 that divides 437 without a remainder.

1, 19, 23, 437

Greatest Common Divisior

We found the divisors of 645, 633, 405, 437 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 645, 633, 405, 437 is 1.

Therefore, GCD of numbers 645, 633, 405, 437 is 1

Given Input Data is 645, 633, 405, 437

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 633 is 3 x 211

Prime Factorization of 405 is 3 x 3 x 3 x 3 x 5

Prime Factorization of 437 is 19 x 23

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, 633) = 136095

GCD(645, 633) = ( 645 x 633 ) / 136095

GCD(645, 633) = 408285 / 136095

GCD(645, 633) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 405

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

LCM(3, 405) = 405

GCD(3, 405) = ( 3 x 405 ) / 405

GCD(3, 405) = 1215 / 405

GCD(3, 405) = 3

Step3:

Here we consider the GCD from the above i.e. 3 as first number and the next as 437

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

LCM(3, 437) = 1311

GCD(3, 437) = ( 3 x 437 ) / 1311

GCD(3, 437) = 1311 / 1311

GCD(3, 437) = 1

GCD of 645, 633, 405, 437 is 1

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• GCD of 965, 870, 591, 182
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1. What is the GCD of 645, 633, 405, 437?

GCD of 645, 633, 405, 437 is 1

2. Where do I get the detailed procedure to find GCD of 645, 633, 405, 437?

You can find a detailed procedure to find GCD of 645, 633, 405, 437 on our page.

3. How to find GCD of 645, 633, 405, 437 on a calculator?

You can find the GCD of 645, 633, 405, 437 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.