GCD of 636, 645, 385, 729 Calculator

Given Input numbers are 636, 645, 385, 729

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

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

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 385

List of positive integer divisors of 385 that divides 385 without a remainder.

1, 5, 7, 11, 35, 55, 77, 385

Divisors of 729

List of positive integer divisors of 729 that divides 729 without a remainder.

1, 3, 9, 27, 81, 243, 729

Greatest Common Divisior

We found the divisors of 636, 645, 385, 729 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 636, 645, 385, 729 is 1.

Therefore, GCD of numbers 636, 645, 385, 729 is 1

Given Input Data is 636, 645, 385, 729

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

Prime Factorization of 636 is 2 x 2 x 3 x 53

Prime Factorization of 645 is 3 x 5 x 43

Prime Factorization of 385 is 5 x 7 x 11

Prime Factorization of 729 is 3 x 3 x 3 x 3 x 3 x 3

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(636, 645) = 136740

GCD(636, 645) = ( 636 x 645 ) / 136740

GCD(636, 645) = 410220 / 136740

GCD(636, 645) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 385

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

LCM(3, 385) = 1155

GCD(3, 385) = ( 3 x 385 ) / 1155

GCD(3, 385) = 1155 / 1155

GCD(3, 385) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 729

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

LCM(1, 729) = 729

GCD(1, 729) = ( 1 x 729 ) / 729

GCD(1, 729) = 729 / 729

GCD(1, 729) = 1

GCD of 636, 645, 385, 729 is 1

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1. What is the GCD of 636, 645, 385, 729?

GCD of 636, 645, 385, 729 is 1

2. Where do I get the detailed procedure to find GCD of 636, 645, 385, 729?

You can find a detailed procedure to find GCD of 636, 645, 385, 729 on our page.

3. How to find GCD of 636, 645, 385, 729 on a calculator?

You can find the GCD of 636, 645, 385, 729 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.