GCD of 649, 820, 421, 607 Calculator

Given Input numbers are 649, 820, 421, 607

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

Divisors of 649

List of positive integer divisors of 649 that divides 649 without a remainder.

1, 11, 59, 649

Divisors of 820

List of positive integer divisors of 820 that divides 820 without a remainder.

1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820

Divisors of 421

List of positive integer divisors of 421 that divides 421 without a remainder.

1, 421

Divisors of 607

List of positive integer divisors of 607 that divides 607 without a remainder.

1, 607

Greatest Common Divisior

We found the divisors of 649, 820, 421, 607 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 649, 820, 421, 607 is 1.

Therefore, GCD of numbers 649, 820, 421, 607 is 1

Given Input Data is 649, 820, 421, 607

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

Prime Factorization of 649 is 11 x 59

Prime Factorization of 820 is 2 x 2 x 5 x 41

Prime Factorization of 421 is 421

Prime Factorization of 607 is 607

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(649, 820) = 532180

GCD(649, 820) = ( 649 x 820 ) / 532180

GCD(649, 820) = 532180 / 532180

GCD(649, 820) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 421

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

LCM(1, 421) = 421

GCD(1, 421) = ( 1 x 421 ) / 421

GCD(1, 421) = 421 / 421

GCD(1, 421) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 607

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

LCM(1, 607) = 607

GCD(1, 607) = ( 1 x 607 ) / 607

GCD(1, 607) = 607 / 607

GCD(1, 607) = 1

GCD of 649, 820, 421, 607 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 939, 150, 991, 114
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• GCD of 286, 609, 662, 361
• GCD of 428, 287, 564, 861
• GCD of 521, 883, 991, 614

1. What is the GCD of 649, 820, 421, 607?

GCD of 649, 820, 421, 607 is 1

2. Where do I get the detailed procedure to find GCD of 649, 820, 421, 607?

You can find a detailed procedure to find GCD of 649, 820, 421, 607 on our page.

3. How to find GCD of 649, 820, 421, 607 on a calculator?

You can find the GCD of 649, 820, 421, 607 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.