GCD of 688, 621, 605 Calculator

Given Input numbers are 688, 621, 605

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

Divisors of 688

List of positive integer divisors of 688 that divides 688 without a remainder.

1, 2, 4, 8, 16, 43, 86, 172, 344, 688

Divisors of 621

List of positive integer divisors of 621 that divides 621 without a remainder.

1, 3, 9, 23, 27, 69, 207, 621

Divisors of 605

List of positive integer divisors of 605 that divides 605 without a remainder.

1, 5, 11, 55, 121, 605

Greatest Common Divisior

We found the divisors of 688, 621, 605 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 688, 621, 605 is 1.

Therefore, GCD of numbers 688, 621, 605 is 1

Given Input Data is 688, 621, 605

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

Prime Factorization of 688 is 2 x 2 x 2 x 2 x 43

Prime Factorization of 621 is 3 x 3 x 3 x 23

Prime Factorization of 605 is 5 x 11 x 11

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(688, 621) = 427248

GCD(688, 621) = ( 688 x 621 ) / 427248

GCD(688, 621) = 427248 / 427248

GCD(688, 621) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 605

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

LCM(1, 605) = 605

GCD(1, 605) = ( 1 x 605 ) / 605

GCD(1, 605) = 605 / 605

GCD(1, 605) = 1

GCD of 688, 621, 605 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 982, 523, 127
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• GCD of 336, 551, 787

1. What is the GCD of 688, 621, 605?

GCD of 688, 621, 605 is 1

2. Where do I get the detailed procedure to find GCD of 688, 621, 605?

You can find a detailed procedure to find GCD of 688, 621, 605 on our page.

3. How to find GCD of 688, 621, 605 on a calculator?

You can find the GCD of 688, 621, 605 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.