GCD of 856, 195, 668, 821 Calculator

Given Input numbers are 856, 195, 668, 821

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

Divisors of 856

List of positive integer divisors of 856 that divides 856 without a remainder.

1, 2, 4, 8, 107, 214, 428, 856

Divisors of 195

List of positive integer divisors of 195 that divides 195 without a remainder.

1, 3, 5, 13, 15, 39, 65, 195

Divisors of 668

List of positive integer divisors of 668 that divides 668 without a remainder.

1, 2, 4, 167, 334, 668

Divisors of 821

List of positive integer divisors of 821 that divides 821 without a remainder.

1, 821

Greatest Common Divisior

We found the divisors of 856, 195, 668, 821 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 856, 195, 668, 821 is 1.

Therefore, GCD of numbers 856, 195, 668, 821 is 1

Given Input Data is 856, 195, 668, 821

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

Prime Factorization of 856 is 2 x 2 x 2 x 107

Prime Factorization of 195 is 3 x 5 x 13

Prime Factorization of 668 is 2 x 2 x 167

Prime Factorization of 821 is 821

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(856, 195) = 166920

GCD(856, 195) = ( 856 x 195 ) / 166920

GCD(856, 195) = 166920 / 166920

GCD(856, 195) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 668

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

LCM(1, 668) = 668

GCD(1, 668) = ( 1 x 668 ) / 668

GCD(1, 668) = 668 / 668

GCD(1, 668) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 821

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

LCM(1, 821) = 821

GCD(1, 821) = ( 1 x 821 ) / 821

GCD(1, 821) = 821 / 821

GCD(1, 821) = 1

GCD of 856, 195, 668, 821 is 1

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1. What is the GCD of 856, 195, 668, 821?

GCD of 856, 195, 668, 821 is 1

2. Where do I get the detailed procedure to find GCD of 856, 195, 668, 821?

You can find a detailed procedure to find GCD of 856, 195, 668, 821 on our page.

3. How to find GCD of 856, 195, 668, 821 on a calculator?

You can find the GCD of 856, 195, 668, 821 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.