GCD of 712, 163, 21, 391 Calculator

Given Input numbers are 712, 163, 21, 391

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

Divisors of 712

List of positive integer divisors of 712 that divides 712 without a remainder.

1, 2, 4, 8, 89, 178, 356, 712

Divisors of 163

List of positive integer divisors of 163 that divides 163 without a remainder.

1, 163

Divisors of 21

List of positive integer divisors of 21 that divides 21 without a remainder.

1, 3, 7, 21

Divisors of 391

List of positive integer divisors of 391 that divides 391 without a remainder.

1, 17, 23, 391

Greatest Common Divisior

We found the divisors of 712, 163, 21, 391 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 712, 163, 21, 391 is 1.

Therefore, GCD of numbers 712, 163, 21, 391 is 1

Given Input Data is 712, 163, 21, 391

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

Prime Factorization of 712 is 2 x 2 x 2 x 89

Prime Factorization of 163 is 163

Prime Factorization of 21 is 3 x 7

Prime Factorization of 391 is 17 x 23

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(712, 163) = 116056

GCD(712, 163) = ( 712 x 163 ) / 116056

GCD(712, 163) = 116056 / 116056

GCD(712, 163) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 21

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

LCM(1, 21) = 21

GCD(1, 21) = ( 1 x 21 ) / 21

GCD(1, 21) = 21 / 21

GCD(1, 21) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 391

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

LCM(1, 391) = 391

GCD(1, 391) = ( 1 x 391 ) / 391

GCD(1, 391) = 391 / 391

GCD(1, 391) = 1

GCD of 712, 163, 21, 391 is 1

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1. What is the GCD of 712, 163, 21, 391?

GCD of 712, 163, 21, 391 is 1

2. Where do I get the detailed procedure to find GCD of 712, 163, 21, 391?

You can find a detailed procedure to find GCD of 712, 163, 21, 391 on our page.

3. How to find GCD of 712, 163, 21, 391 on a calculator?

You can find the GCD of 712, 163, 21, 391 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.