GCD of 656, 138, 845 Calculator

Given Input numbers are 656, 138, 845

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

Divisors of 656

List of positive integer divisors of 656 that divides 656 without a remainder.

1, 2, 4, 8, 16, 41, 82, 164, 328, 656

Divisors of 138

List of positive integer divisors of 138 that divides 138 without a remainder.

1, 2, 3, 6, 23, 46, 69, 138

Divisors of 845

List of positive integer divisors of 845 that divides 845 without a remainder.

1, 5, 13, 65, 169, 845

Greatest Common Divisior

We found the divisors of 656, 138, 845 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 656, 138, 845 is 1.

Therefore, GCD of numbers 656, 138, 845 is 1

Given Input Data is 656, 138, 845

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

Prime Factorization of 656 is 2 x 2 x 2 x 2 x 41

Prime Factorization of 138 is 2 x 3 x 23

Prime Factorization of 845 is 5 x 13 x 13

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(656, 138) = 45264

GCD(656, 138) = ( 656 x 138 ) / 45264

GCD(656, 138) = 90528 / 45264

GCD(656, 138) = 2

Step2:

Here we consider the GCD from the above i.e. 2 as first number and the next as 845

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

LCM(2, 845) = 1690

GCD(2, 845) = ( 2 x 845 ) / 1690

GCD(2, 845) = 1690 / 1690

GCD(2, 845) = 1

GCD of 656, 138, 845 is 1

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1. What is the GCD of 656, 138, 845?

GCD of 656, 138, 845 is 1

2. Where do I get the detailed procedure to find GCD of 656, 138, 845?

You can find a detailed procedure to find GCD of 656, 138, 845 on our page.

3. How to find GCD of 656, 138, 845 on a calculator?

You can find the GCD of 656, 138, 845 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.