GCD of 391, 921, 51, 439 Calculator

Given Input numbers are 391, 921, 51, 439

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 921

List of positive integer divisors of 921 that divides 921 without a remainder.

1, 3, 307, 921

Divisors of 51

List of positive integer divisors of 51 that divides 51 without a remainder.

1, 3, 17, 51

Divisors of 439

List of positive integer divisors of 439 that divides 439 without a remainder.

1, 439

Greatest Common Divisior

We found the divisors of 391, 921, 51, 439 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 391, 921, 51, 439 is 1.

Therefore, GCD of numbers 391, 921, 51, 439 is 1

Given Input Data is 391, 921, 51, 439

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

Prime Factorization of 391 is 17 x 23

Prime Factorization of 921 is 3 x 307

Prime Factorization of 51 is 3 x 17

Prime Factorization of 439 is 439

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, 921) = 360111

GCD(391, 921) = ( 391 x 921 ) / 360111

GCD(391, 921) = 360111 / 360111

GCD(391, 921) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 51

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

LCM(1, 51) = 51

GCD(1, 51) = ( 1 x 51 ) / 51

GCD(1, 51) = 51 / 51

GCD(1, 51) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 439

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

LCM(1, 439) = 439

GCD(1, 439) = ( 1 x 439 ) / 439

GCD(1, 439) = 439 / 439

GCD(1, 439) = 1

GCD of 391, 921, 51, 439 is 1

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1. What is the GCD of 391, 921, 51, 439?

GCD of 391, 921, 51, 439 is 1

2. Where do I get the detailed procedure to find GCD of 391, 921, 51, 439?

You can find a detailed procedure to find GCD of 391, 921, 51, 439 on our page.

3. How to find GCD of 391, 921, 51, 439 on a calculator?

You can find the GCD of 391, 921, 51, 439 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.