GCD of 642, 773, 561 Calculator

Given Input numbers are 642, 773, 561

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

Divisors of 642

List of positive integer divisors of 642 that divides 642 without a remainder.

1, 2, 3, 6, 107, 214, 321, 642

Divisors of 773

List of positive integer divisors of 773 that divides 773 without a remainder.

1, 773

Divisors of 561

List of positive integer divisors of 561 that divides 561 without a remainder.

1, 3, 11, 17, 33, 51, 187, 561

Greatest Common Divisior

We found the divisors of 642, 773, 561 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 642, 773, 561 is 1.

Therefore, GCD of numbers 642, 773, 561 is 1

Given Input Data is 642, 773, 561

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

Prime Factorization of 642 is 2 x 3 x 107

Prime Factorization of 773 is 773

Prime Factorization of 561 is 3 x 11 x 17

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(642, 773) = 496266

GCD(642, 773) = ( 642 x 773 ) / 496266

GCD(642, 773) = 496266 / 496266

GCD(642, 773) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 561

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

LCM(1, 561) = 561

GCD(1, 561) = ( 1 x 561 ) / 561

GCD(1, 561) = 561 / 561

GCD(1, 561) = 1

GCD of 642, 773, 561 is 1

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1. What is the GCD of 642, 773, 561?

GCD of 642, 773, 561 is 1

2. Where do I get the detailed procedure to find GCD of 642, 773, 561?

You can find a detailed procedure to find GCD of 642, 773, 561 on our page.

3. How to find GCD of 642, 773, 561 on a calculator?

You can find the GCD of 642, 773, 561 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.