GCD of 869, 390, 52, 645 Calculator

Given Input numbers are 869, 390, 52, 645

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

Divisors of 869

List of positive integer divisors of 869 that divides 869 without a remainder.

1, 11, 79, 869

Divisors of 390

List of positive integer divisors of 390 that divides 390 without a remainder.

1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390

Divisors of 52

List of positive integer divisors of 52 that divides 52 without a remainder.

1, 2, 4, 13, 26, 52

Divisors of 645

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

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

Greatest Common Divisior

We found the divisors of 869, 390, 52, 645 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 869, 390, 52, 645 is 1.

Therefore, GCD of numbers 869, 390, 52, 645 is 1

Given Input Data is 869, 390, 52, 645

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

Prime Factorization of 869 is 11 x 79

Prime Factorization of 390 is 2 x 3 x 5 x 13

Prime Factorization of 52 is 2 x 2 x 13

Prime Factorization of 645 is 3 x 5 x 43

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(869, 390) = 338910

GCD(869, 390) = ( 869 x 390 ) / 338910

GCD(869, 390) = 338910 / 338910

GCD(869, 390) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 52

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

LCM(1, 52) = 52

GCD(1, 52) = ( 1 x 52 ) / 52

GCD(1, 52) = 52 / 52

GCD(1, 52) = 1

Step3:

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

GCD of 869, 390, 52, 645 is 1

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1. What is the GCD of 869, 390, 52, 645?

GCD of 869, 390, 52, 645 is 1

2. Where do I get the detailed procedure to find GCD of 869, 390, 52, 645?

You can find a detailed procedure to find GCD of 869, 390, 52, 645 on our page.

3. How to find GCD of 869, 390, 52, 645 on a calculator?

You can find the GCD of 869, 390, 52, 645 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.