GCD of 691, 644, 628 Calculator

Given Input numbers are 691, 644, 628

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

Divisors of 691

List of positive integer divisors of 691 that divides 691 without a remainder.

1, 691

Divisors of 644

List of positive integer divisors of 644 that divides 644 without a remainder.

1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644

Divisors of 628

List of positive integer divisors of 628 that divides 628 without a remainder.

1, 2, 4, 157, 314, 628

Greatest Common Divisior

We found the divisors of 691, 644, 628 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 691, 644, 628 is 1.

Therefore, GCD of numbers 691, 644, 628 is 1

Given Input Data is 691, 644, 628

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

Prime Factorization of 691 is 691

Prime Factorization of 644 is 2 x 2 x 7 x 23

Prime Factorization of 628 is 2 x 2 x 157

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(691, 644) = 445004

GCD(691, 644) = ( 691 x 644 ) / 445004

GCD(691, 644) = 445004 / 445004

GCD(691, 644) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 628

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

LCM(1, 628) = 628

GCD(1, 628) = ( 1 x 628 ) / 628

GCD(1, 628) = 628 / 628

GCD(1, 628) = 1

GCD of 691, 644, 628 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 891, 883, 910
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• GCD of 643, 141, 825
• GCD of 133, 940, 883
• GCD of 144, 357, 786

1. What is the GCD of 691, 644, 628?

GCD of 691, 644, 628 is 1

2. Where do I get the detailed procedure to find GCD of 691, 644, 628?

You can find a detailed procedure to find GCD of 691, 644, 628 on our page.

3. How to find GCD of 691, 644, 628 on a calculator?

You can find the GCD of 691, 644, 628 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.