GCD of 210, 179, 138, 391 Calculator

Given Input numbers are 210, 179, 138, 391

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

Divisors of 210

List of positive integer divisors of 210 that divides 210 without a remainder.

1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210

Divisors of 179

List of positive integer divisors of 179 that divides 179 without a remainder.

1, 179

Divisors of 138

List of positive integer divisors of 138 that divides 138 without a remainder.

1, 2, 3, 6, 23, 46, 69, 138

Divisors of 391

List of positive integer divisors of 391 that divides 391 without a remainder.

1, 17, 23, 391

Greatest Common Divisior

We found the divisors of 210, 179, 138, 391 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 210, 179, 138, 391 is 1.

Therefore, GCD of numbers 210, 179, 138, 391 is 1

Given Input Data is 210, 179, 138, 391

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

Prime Factorization of 210 is 2 x 3 x 5 x 7

Prime Factorization of 179 is 179

Prime Factorization of 138 is 2 x 3 x 23

Prime Factorization of 391 is 17 x 23

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(210, 179) = 37590

GCD(210, 179) = ( 210 x 179 ) / 37590

GCD(210, 179) = 37590 / 37590

GCD(210, 179) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 138

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

LCM(1, 138) = 138

GCD(1, 138) = ( 1 x 138 ) / 138

GCD(1, 138) = 138 / 138

GCD(1, 138) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 391

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

LCM(1, 391) = 391

GCD(1, 391) = ( 1 x 391 ) / 391

GCD(1, 391) = 391 / 391

GCD(1, 391) = 1

GCD of 210, 179, 138, 391 is 1

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1. What is the GCD of 210, 179, 138, 391?

GCD of 210, 179, 138, 391 is 1

2. Where do I get the detailed procedure to find GCD of 210, 179, 138, 391?

You can find a detailed procedure to find GCD of 210, 179, 138, 391 on our page.

3. How to find GCD of 210, 179, 138, 391 on a calculator?

You can find the GCD of 210, 179, 138, 391 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.