GCD of 21, 655, 121, 593 Calculator

Given Input numbers are 21, 655, 121, 593

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

Divisors of 21

List of positive integer divisors of 21 that divides 21 without a remainder.

1, 3, 7, 21

Divisors of 655

List of positive integer divisors of 655 that divides 655 without a remainder.

1, 5, 131, 655

Divisors of 121

List of positive integer divisors of 121 that divides 121 without a remainder.

1, 11, 121

Divisors of 593

List of positive integer divisors of 593 that divides 593 without a remainder.

1, 593

Greatest Common Divisior

We found the divisors of 21, 655, 121, 593 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 21, 655, 121, 593 is 1.

Therefore, GCD of numbers 21, 655, 121, 593 is 1

Given Input Data is 21, 655, 121, 593

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

Prime Factorization of 21 is 3 x 7

Prime Factorization of 655 is 5 x 131

Prime Factorization of 121 is 11 x 11

Prime Factorization of 593 is 593

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(21, 655) = 13755

GCD(21, 655) = ( 21 x 655 ) / 13755

GCD(21, 655) = 13755 / 13755

GCD(21, 655) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 121

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

LCM(1, 121) = 121

GCD(1, 121) = ( 1 x 121 ) / 121

GCD(1, 121) = 121 / 121

GCD(1, 121) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 593

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

LCM(1, 593) = 593

GCD(1, 593) = ( 1 x 593 ) / 593

GCD(1, 593) = 593 / 593

GCD(1, 593) = 1

GCD of 21, 655, 121, 593 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 21, 588, 645, 254
• GCD of 86, 606, 458, 469
• GCD of 14, 259, 515, 539
• GCD of 11, 958, 568, 565
• GCD of 37, 570, 139, 409

1. What is the GCD of 21, 655, 121, 593?

GCD of 21, 655, 121, 593 is 1

2. Where do I get the detailed procedure to find GCD of 21, 655, 121, 593?

You can find a detailed procedure to find GCD of 21, 655, 121, 593 on our page.

3. How to find GCD of 21, 655, 121, 593 on a calculator?

You can find the GCD of 21, 655, 121, 593 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.