GCD of 812, 495, 645, 647 Calculator

Given Input numbers are 812, 495, 645, 647

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

Divisors of 812

List of positive integer divisors of 812 that divides 812 without a remainder.

1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 406, 812

Divisors of 495

List of positive integer divisors of 495 that divides 495 without a remainder.

1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495

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 647

List of positive integer divisors of 647 that divides 647 without a remainder.

1, 647

Greatest Common Divisior

We found the divisors of 812, 495, 645, 647 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 812, 495, 645, 647 is 1.

Therefore, GCD of numbers 812, 495, 645, 647 is 1

Given Input Data is 812, 495, 645, 647

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

Prime Factorization of 812 is 2 x 2 x 7 x 29

Prime Factorization of 495 is 3 x 3 x 5 x 11

Prime Factorization of 645 is 3 x 5 x 43

Prime Factorization of 647 is 647

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(812, 495) = 401940

GCD(812, 495) = ( 812 x 495 ) / 401940

GCD(812, 495) = 401940 / 401940

GCD(812, 495) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 645

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

LCM(1, 645) = 645

GCD(1, 645) = ( 1 x 645 ) / 645

GCD(1, 645) = 645 / 645

GCD(1, 645) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 647

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

LCM(1, 647) = 647

GCD(1, 647) = ( 1 x 647 ) / 647

GCD(1, 647) = 647 / 647

GCD(1, 647) = 1

GCD of 812, 495, 645, 647 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 244, 380, 613, 110
• GCD of 182, 930, 660, 646
• GCD of 603, 629, 167, 205
• GCD of 434, 945, 356, 757
• GCD of 165, 807, 925, 518

1. What is the GCD of 812, 495, 645, 647?

GCD of 812, 495, 645, 647 is 1

2. Where do I get the detailed procedure to find GCD of 812, 495, 645, 647?

You can find a detailed procedure to find GCD of 812, 495, 645, 647 on our page.

3. How to find GCD of 812, 495, 645, 647 on a calculator?

You can find the GCD of 812, 495, 645, 647 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.