GCD of 669, 261, 28, 210 Calculator

Given Input numbers are 669, 261, 28, 210

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

Divisors of 669

List of positive integer divisors of 669 that divides 669 without a remainder.

1, 3, 223, 669

Divisors of 261

List of positive integer divisors of 261 that divides 261 without a remainder.

1, 3, 9, 29, 87, 261

Divisors of 28

List of positive integer divisors of 28 that divides 28 without a remainder.

1, 2, 4, 7, 14, 28

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

Greatest Common Divisior

We found the divisors of 669, 261, 28, 210 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 669, 261, 28, 210 is 1.

Therefore, GCD of numbers 669, 261, 28, 210 is 1

Given Input Data is 669, 261, 28, 210

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

Prime Factorization of 669 is 3 x 223

Prime Factorization of 261 is 3 x 3 x 29

Prime Factorization of 28 is 2 x 2 x 7

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

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(669, 261) = 58203

GCD(669, 261) = ( 669 x 261 ) / 58203

GCD(669, 261) = 174609 / 58203

GCD(669, 261) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 28

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

LCM(3, 28) = 84

GCD(3, 28) = ( 3 x 28 ) / 84

GCD(3, 28) = 84 / 84

GCD(3, 28) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 210

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

LCM(1, 210) = 210

GCD(1, 210) = ( 1 x 210 ) / 210

GCD(1, 210) = 210 / 210

GCD(1, 210) = 1

GCD of 669, 261, 28, 210 is 1

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1. What is the GCD of 669, 261, 28, 210?

GCD of 669, 261, 28, 210 is 1

2. Where do I get the detailed procedure to find GCD of 669, 261, 28, 210?

You can find a detailed procedure to find GCD of 669, 261, 28, 210 on our page.

3. How to find GCD of 669, 261, 28, 210 on a calculator?

You can find the GCD of 669, 261, 28, 210 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.