GCD of 765, 447, 391 Calculator

Given Input numbers are 765, 447, 391

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

Divisors of 765

List of positive integer divisors of 765 that divides 765 without a remainder.

1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765

Divisors of 447

List of positive integer divisors of 447 that divides 447 without a remainder.

1, 3, 149, 447

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 765, 447, 391 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 765, 447, 391 is 1.

Therefore, GCD of numbers 765, 447, 391 is 1

Given Input Data is 765, 447, 391

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

Prime Factorization of 765 is 3 x 3 x 5 x 17

Prime Factorization of 447 is 3 x 149

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(765, 447) = 113985

GCD(765, 447) = ( 765 x 447 ) / 113985

GCD(765, 447) = 341955 / 113985

GCD(765, 447) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 391

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

LCM(3, 391) = 1173

GCD(3, 391) = ( 3 x 391 ) / 1173

GCD(3, 391) = 1173 / 1173

GCD(3, 391) = 1

GCD of 765, 447, 391 is 1

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1. What is the GCD of 765, 447, 391?

GCD of 765, 447, 391 is 1

2. Where do I get the detailed procedure to find GCD of 765, 447, 391?

You can find a detailed procedure to find GCD of 765, 447, 391 on our page.

3. How to find GCD of 765, 447, 391 on a calculator?

You can find the GCD of 765, 447, 391 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.