GCD of 338, 551, 21, 981 Calculator

Given Input numbers are 338, 551, 21, 981

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

Divisors of 338

List of positive integer divisors of 338 that divides 338 without a remainder.

1, 2, 13, 26, 169, 338

Divisors of 551

List of positive integer divisors of 551 that divides 551 without a remainder.

1, 19, 29, 551

Divisors of 21

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

1, 3, 7, 21

Divisors of 981

List of positive integer divisors of 981 that divides 981 without a remainder.

1, 3, 9, 109, 327, 981

Greatest Common Divisior

We found the divisors of 338, 551, 21, 981 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 338, 551, 21, 981 is 1.

Therefore, GCD of numbers 338, 551, 21, 981 is 1

Given Input Data is 338, 551, 21, 981

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

Prime Factorization of 338 is 2 x 13 x 13

Prime Factorization of 551 is 19 x 29

Prime Factorization of 21 is 3 x 7

Prime Factorization of 981 is 3 x 3 x 109

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(338, 551) = 186238

GCD(338, 551) = ( 338 x 551 ) / 186238

GCD(338, 551) = 186238 / 186238

GCD(338, 551) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 21

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

LCM(1, 21) = 21

GCD(1, 21) = ( 1 x 21 ) / 21

GCD(1, 21) = 21 / 21

GCD(1, 21) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 981

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

LCM(1, 981) = 981

GCD(1, 981) = ( 1 x 981 ) / 981

GCD(1, 981) = 981 / 981

GCD(1, 981) = 1

GCD of 338, 551, 21, 981 is 1

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1. What is the GCD of 338, 551, 21, 981?

GCD of 338, 551, 21, 981 is 1

2. Where do I get the detailed procedure to find GCD of 338, 551, 21, 981?

You can find a detailed procedure to find GCD of 338, 551, 21, 981 on our page.

3. How to find GCD of 338, 551, 21, 981 on a calculator?

You can find the GCD of 338, 551, 21, 981 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.