GCD of 647, 477, 244, 305 Calculator

Given Input numbers are 647, 477, 244, 305

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

Divisors of 647

List of positive integer divisors of 647 that divides 647 without a remainder.

1, 647

Divisors of 477

List of positive integer divisors of 477 that divides 477 without a remainder.

1, 3, 9, 53, 159, 477

Divisors of 244

List of positive integer divisors of 244 that divides 244 without a remainder.

1, 2, 4, 61, 122, 244

Divisors of 305

List of positive integer divisors of 305 that divides 305 without a remainder.

1, 5, 61, 305

Greatest Common Divisior

We found the divisors of 647, 477, 244, 305 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 647, 477, 244, 305 is 1.

Therefore, GCD of numbers 647, 477, 244, 305 is 1

Given Input Data is 647, 477, 244, 305

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

Prime Factorization of 647 is 647

Prime Factorization of 477 is 3 x 3 x 53

Prime Factorization of 244 is 2 x 2 x 61

Prime Factorization of 305 is 5 x 61

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(647, 477) = 308619

GCD(647, 477) = ( 647 x 477 ) / 308619

GCD(647, 477) = 308619 / 308619

GCD(647, 477) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 244

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

LCM(1, 244) = 244

GCD(1, 244) = ( 1 x 244 ) / 244

GCD(1, 244) = 244 / 244

GCD(1, 244) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 305

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

LCM(1, 305) = 305

GCD(1, 305) = ( 1 x 305 ) / 305

GCD(1, 305) = 305 / 305

GCD(1, 305) = 1

GCD of 647, 477, 244, 305 is 1

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1. What is the GCD of 647, 477, 244, 305?

GCD of 647, 477, 244, 305 is 1

2. Where do I get the detailed procedure to find GCD of 647, 477, 244, 305?

You can find a detailed procedure to find GCD of 647, 477, 244, 305 on our page.

3. How to find GCD of 647, 477, 244, 305 on a calculator?

You can find the GCD of 647, 477, 244, 305 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.