GCD of 645, 404, 29, 891 Calculator

Given Input numbers are 645, 404, 29, 891

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 404

List of positive integer divisors of 404 that divides 404 without a remainder.

1, 2, 4, 101, 202, 404

Divisors of 29

List of positive integer divisors of 29 that divides 29 without a remainder.

1, 29

Divisors of 891

List of positive integer divisors of 891 that divides 891 without a remainder.

1, 3, 9, 11, 27, 33, 81, 99, 297, 891

Greatest Common Divisior

We found the divisors of 645, 404, 29, 891 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 645, 404, 29, 891 is 1.

Therefore, GCD of numbers 645, 404, 29, 891 is 1

Given Input Data is 645, 404, 29, 891

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 404 is 2 x 2 x 101

Prime Factorization of 29 is 29

Prime Factorization of 891 is 3 x 3 x 3 x 3 x 11

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, 404) = 260580

GCD(645, 404) = ( 645 x 404 ) / 260580

GCD(645, 404) = 260580 / 260580

GCD(645, 404) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 29

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

LCM(1, 29) = 29

GCD(1, 29) = ( 1 x 29 ) / 29

GCD(1, 29) = 29 / 29

GCD(1, 29) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 891

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

LCM(1, 891) = 891

GCD(1, 891) = ( 1 x 891 ) / 891

GCD(1, 891) = 891 / 891

GCD(1, 891) = 1

GCD of 645, 404, 29, 891 is 1

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1. What is the GCD of 645, 404, 29, 891?

GCD of 645, 404, 29, 891 is 1

2. Where do I get the detailed procedure to find GCD of 645, 404, 29, 891?

You can find a detailed procedure to find GCD of 645, 404, 29, 891 on our page.

3. How to find GCD of 645, 404, 29, 891 on a calculator?

You can find the GCD of 645, 404, 29, 891 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.