GCD of 711, 393, 20, 478 Calculator

Given Input numbers are 711, 393, 20, 478

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

Divisors of 711

List of positive integer divisors of 711 that divides 711 without a remainder.

1, 3, 9, 79, 237, 711

Divisors of 393

List of positive integer divisors of 393 that divides 393 without a remainder.

1, 3, 131, 393

Divisors of 20

List of positive integer divisors of 20 that divides 20 without a remainder.

1, 2, 4, 5, 10, 20

Divisors of 478

List of positive integer divisors of 478 that divides 478 without a remainder.

1, 2, 239, 478

Greatest Common Divisior

We found the divisors of 711, 393, 20, 478 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 711, 393, 20, 478 is 1.

Therefore, GCD of numbers 711, 393, 20, 478 is 1

Given Input Data is 711, 393, 20, 478

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

Prime Factorization of 711 is 3 x 3 x 79

Prime Factorization of 393 is 3 x 131

Prime Factorization of 20 is 2 x 2 x 5

Prime Factorization of 478 is 2 x 239

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(711, 393) = 93141

GCD(711, 393) = ( 711 x 393 ) / 93141

GCD(711, 393) = 279423 / 93141

GCD(711, 393) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 20

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

LCM(3, 20) = 60

GCD(3, 20) = ( 3 x 20 ) / 60

GCD(3, 20) = 60 / 60

GCD(3, 20) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 478

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

LCM(1, 478) = 478

GCD(1, 478) = ( 1 x 478 ) / 478

GCD(1, 478) = 478 / 478

GCD(1, 478) = 1

GCD of 711, 393, 20, 478 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 915, 811, 69, 361
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• GCD of 787, 374, 75, 486
• GCD of 833, 591, 22, 203
• GCD of 854, 551, 70, 919

1. What is the GCD of 711, 393, 20, 478?

GCD of 711, 393, 20, 478 is 1

2. Where do I get the detailed procedure to find GCD of 711, 393, 20, 478?

You can find a detailed procedure to find GCD of 711, 393, 20, 478 on our page.

3. How to find GCD of 711, 393, 20, 478 on a calculator?

You can find the GCD of 711, 393, 20, 478 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.