Where do I get the detailed procedure to find GCD of 561, 646, 13?

You can find a detailed procedure to find GCD of 561, 646, 13 on our page.

How to find GCD of 561, 646, 13 on a calculator?

You can find the GCD of 561, 646, 13 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 561, 646, 13 Calculator

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

Online GCD Calculator is useful to find the GCD of 561, 646, 13 quickly. Get the easiest ways to solve the greatest common divisor of 561, 646, 13 i.e 1 in different methods as follows.

How to Find GCD of Numbers 561, 646, 13 with Factoring?

Given Input numbers are 561, 646, 13

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

Divisors of 561 :

The positive integer divisors of 561 that completely divides 561 are.

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

Divisors of 646 :

The positive integer divisors of 646 that completely divides 646 are.

1, 2, 17, 19, 34, 38, 323, 646

Divisors of 13 :

The positive integer divisors of 13 that completely divides 13 are.

1, 13

GCD of numbers is the greatest common divisor

So, the GCD (561, 646, 13) = 1.

Find GCD of 561, 646, 13 using Prime Factorization

Given numbers are 561, 646, 13

The list of prime factors of all numbers are

Prime factors of 561 are 3 x 11 x 17

Prime factors of 646 are 2 x 17 x 19

Prime factors of 13 are 13

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

Steps to Calculate GCD of 561, 646, 13 using LCM Formula

Given numbers are 561, 646, 13

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

Apply this formula for all numbers.

Step1:

LCM(561, 646) = 21318

GCD(561, 646) = ( 561 x 646 ) / 21318

= 561 / 646

= 561

Step2:

LCM(17, 13) = 221

GCD(17, 13) = ( 17 x 13 ) / 221

= 17 / 13

= 17

So, Greatest Common Divisor of 561, 646, 13 is 1

GCD of Numbers Calculation Examples

Here are some samples of GCD of Numbers calculations.

Greatest Common Divisor of 561, 646, 13

Given numbers are 561, 646, 13
The greatest common divisor of numbers 561, 646, 13 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 561, 646, 13 is 1.

FAQs on GCD of 561, 646, 13 Calculator

1. What is the GCD of 561, 646, 13?

GCD of given numbers 561, 646, 13 is 1

2. How to calculate the greatest common divisor of 561, 646, 13?

We can find the highest common divisor of 561, 646, 13 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 561, 646, 13 i.e 1.

3. How can I use the GCD of 561, 646, 13Calculator?

Out the numbers 561, 646, 13 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.