GCD of 656, 321, 820 Calculator

Given Input numbers are 656, 321, 820

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 321

List of positive integer divisors of 321 that divides 321 without a remainder.

1, 3, 107, 321

Divisors of 820

List of positive integer divisors of 820 that divides 820 without a remainder.

1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820

Greatest Common Divisior

We found the divisors of 656, 321, 820 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 656, 321, 820 is 1.

Therefore, GCD of numbers 656, 321, 820 is 1

Given Input Data is 656, 321, 820

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 321 is 3 x 107

Prime Factorization of 820 is 2 x 2 x 5 x 41

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, 321) = 210576

GCD(656, 321) = ( 656 x 321 ) / 210576

GCD(656, 321) = 210576 / 210576

GCD(656, 321) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 820

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

LCM(1, 820) = 820

GCD(1, 820) = ( 1 x 820 ) / 820

GCD(1, 820) = 820 / 820

GCD(1, 820) = 1

GCD of 656, 321, 820 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 377, 942, 450
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• GCD of 711, 599, 510
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1. What is the GCD of 656, 321, 820?

GCD of 656, 321, 820 is 1

2. Where do I get the detailed procedure to find GCD of 656, 321, 820?

You can find a detailed procedure to find GCD of 656, 321, 820 on our page.

3. How to find GCD of 656, 321, 820 on a calculator?

You can find the GCD of 656, 321, 820 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.