GCD of 669, 206, 21, 571 Calculator

Given Input numbers are 669, 206, 21, 571

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 206

List of positive integer divisors of 206 that divides 206 without a remainder.

1, 2, 103, 206

Divisors of 21

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

1, 3, 7, 21

Divisors of 571

List of positive integer divisors of 571 that divides 571 without a remainder.

1, 571

Greatest Common Divisior

We found the divisors of 669, 206, 21, 571 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 669, 206, 21, 571 is 1.

Therefore, GCD of numbers 669, 206, 21, 571 is 1

Given Input Data is 669, 206, 21, 571

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

Prime Factorization of 669 is 3 x 223

Prime Factorization of 206 is 2 x 103

Prime Factorization of 21 is 3 x 7

Prime Factorization of 571 is 571

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, 206) = 137814

GCD(669, 206) = ( 669 x 206 ) / 137814

GCD(669, 206) = 137814 / 137814

GCD(669, 206) = 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 571

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

LCM(1, 571) = 571

GCD(1, 571) = ( 1 x 571 ) / 571

GCD(1, 571) = 571 / 571

GCD(1, 571) = 1

GCD of 669, 206, 21, 571 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 270, 644, 80, 465
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• GCD of 463, 280, 34, 815
• GCD of 915, 884, 21, 762

1. What is the GCD of 669, 206, 21, 571?

GCD of 669, 206, 21, 571 is 1

2. Where do I get the detailed procedure to find GCD of 669, 206, 21, 571?

You can find a detailed procedure to find GCD of 669, 206, 21, 571 on our page.

3. How to find GCD of 669, 206, 21, 571 on a calculator?

You can find the GCD of 669, 206, 21, 571 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.