GCD of 821, 191, 81, 623 Calculator

Given Input numbers are 821, 191, 81, 623

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

Divisors of 821

List of positive integer divisors of 821 that divides 821 without a remainder.

1, 821

Divisors of 191

List of positive integer divisors of 191 that divides 191 without a remainder.

1, 191

Divisors of 81

List of positive integer divisors of 81 that divides 81 without a remainder.

1, 3, 9, 27, 81

Divisors of 623

List of positive integer divisors of 623 that divides 623 without a remainder.

1, 7, 89, 623

Greatest Common Divisior

We found the divisors of 821, 191, 81, 623 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 821, 191, 81, 623 is 1.

Therefore, GCD of numbers 821, 191, 81, 623 is 1

Given Input Data is 821, 191, 81, 623

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

Prime Factorization of 821 is 821

Prime Factorization of 191 is 191

Prime Factorization of 81 is 3 x 3 x 3 x 3

Prime Factorization of 623 is 7 x 89

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(821, 191) = 156811

GCD(821, 191) = ( 821 x 191 ) / 156811

GCD(821, 191) = 156811 / 156811

GCD(821, 191) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 81

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

LCM(1, 81) = 81

GCD(1, 81) = ( 1 x 81 ) / 81

GCD(1, 81) = 81 / 81

GCD(1, 81) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 623

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

LCM(1, 623) = 623

GCD(1, 623) = ( 1 x 623 ) / 623

GCD(1, 623) = 623 / 623

GCD(1, 623) = 1

GCD of 821, 191, 81, 623 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 383, 143, 59, 340
• GCD of 140, 640, 79, 810
• GCD of 539, 344, 55, 114
• GCD of 794, 987, 40, 532
• GCD of 458, 115, 48, 187

1. What is the GCD of 821, 191, 81, 623?

GCD of 821, 191, 81, 623 is 1

2. Where do I get the detailed procedure to find GCD of 821, 191, 81, 623?

You can find a detailed procedure to find GCD of 821, 191, 81, 623 on our page.

3. How to find GCD of 821, 191, 81, 623 on a calculator?

You can find the GCD of 821, 191, 81, 623 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.