GCD of 391, 621, 351 Calculator

Given Input numbers are 391, 621, 351

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

Divisors of 391

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

1, 17, 23, 391

Divisors of 621

List of positive integer divisors of 621 that divides 621 without a remainder.

1, 3, 9, 23, 27, 69, 207, 621

Divisors of 351

List of positive integer divisors of 351 that divides 351 without a remainder.

1, 3, 9, 13, 27, 39, 117, 351

Greatest Common Divisior

We found the divisors of 391, 621, 351 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 391, 621, 351 is 1.

Therefore, GCD of numbers 391, 621, 351 is 1

Given Input Data is 391, 621, 351

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

Prime Factorization of 391 is 17 x 23

Prime Factorization of 621 is 3 x 3 x 3 x 23

Prime Factorization of 351 is 3 x 3 x 3 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(391, 621) = 10557

GCD(391, 621) = ( 391 x 621 ) / 10557

GCD(391, 621) = 242811 / 10557

GCD(391, 621) = 23

Step2:

Here we consider the GCD from the above i.e. 23 as first number and the next as 351

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

LCM(23, 351) = 8073

GCD(23, 351) = ( 23 x 351 ) / 8073

GCD(23, 351) = 8073 / 8073

GCD(23, 351) = 1

GCD of 391, 621, 351 is 1

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1. What is the GCD of 391, 621, 351?

GCD of 391, 621, 351 is 1

2. Where do I get the detailed procedure to find GCD of 391, 621, 351?

You can find a detailed procedure to find GCD of 391, 621, 351 on our page.

3. How to find GCD of 391, 621, 351 on a calculator?

You can find the GCD of 391, 621, 351 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.