Where do I get the detailed procedure to find GCD of 645, 978, 689?

You can find a detailed procedure to find GCD of 645, 978, 689 on our page.

How to find GCD of 645, 978, 689 on a calculator?

You can find the GCD of 645, 978, 689 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.

GCD of 645, 978, 689 Calculator

Created By : Veerendra
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023

Online GCD Calculator is useful to find the GCD of 645, 978, 689 quickly. Get the easiest ways to solve the greatest common divisor of 645, 978, 689 i.e 1 in different methods as follows.

How to Find GCD of Numbers 645, 978, 689 with Factoring?

Given Input numbers are 645, 978, 689

In the factoring method, we have to find the divisors of all numbers

Divisors of 645 :

The positive integer divisors of 645 that completely divides 645 are.

1, 3, 5, 15, 43, 129, 215, 645

Divisors of 978 :

The positive integer divisors of 978 that completely divides 978 are.

1, 2, 3, 6, 163, 326, 489, 978

Divisors of 689 :

The positive integer divisors of 689 that completely divides 689 are.

1, 13, 53, 689

GCD of numbers is the greatest common divisor

So, the GCD (645, 978, 689) = 1.

Find GCD of 645, 978, 689 using Prime Factorization

Given numbers are 645, 978, 689

The list of prime factors of all numbers are

Prime factors of 645 are 3 x 5 x 43

Prime factors of 978 are 2 x 3 x 163

Prime factors of 689 are 13 x 53

The above numbers do not have any common prime factor. So GCD is 1

Steps to Calculate GCD of 645, 978, 689 using LCM Formula

Given numbers are 645, 978, 689

GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)

Apply this formula for all numbers.

Step1:

LCM(645, 978) = 210270

GCD(645, 978) = ( 645 x 978 ) / 210270

= 645 / 978

= 645

Step2:

LCM(3, 689) = 2067

GCD(3, 689) = ( 3 x 689 ) / 2067

= 3 / 689

= 3

So, Greatest Common Divisor of 645, 978, 689 is 1

GCD of Numbers Calculation Examples

Here are some samples of GCD of Numbers calculations.

Greatest Common Divisor of 645, 978, 689

Given numbers are 645, 978, 689
The greatest common divisor of numbers 645, 978, 689 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 645, 978, 689 is 1.

FAQs on GCD of 645, 978, 689 Calculator

1. What is the GCD of 645, 978, 689?

GCD of given numbers 645, 978, 689 is 1

2. How to calculate the greatest common divisor of 645, 978, 689?

We can find the highest common divisor of 645, 978, 689 easily using the prime factorization method. Just list the prime factors of all numbers and pick the highest common factor which is the GCD of 645, 978, 689 i.e 1.

3. How can I use the GCD of 645, 978, 689Calculator?

Out the numbers 645, 978, 689 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.