GCD of 646, 438, 689 Calculator
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Online GCD Calculator is useful to find the GCD of 646, 438, 689 quickly. Get the easiest ways to solve the greatest common divisor of 646, 438, 689 i.e 1 in different methods as follows.
Given Input numbers are 646, 438, 689
In the factoring method, we have to find the divisors of all numbers
Divisors of 646 :
The positive integer divisors of 646 that completely divides 646 are.
1, 2, 17, 19, 34, 38, 323, 646
Divisors of 438 :
The positive integer divisors of 438 that completely divides 438 are.
1, 2, 3, 6, 73, 146, 219, 438
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 (646, 438, 689) = 1.
Given numbers are 646, 438, 689
The list of prime factors of all numbers are
Prime factors of 646 are 2 x 17 x 19
Prime factors of 438 are 2 x 3 x 73
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 646, 438, 689 using LCM Formula
Given numbers are 646, 438, 689
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(646, 438) = 141474
GCD(646, 438) = ( 646 x 438 ) / 141474
= 646 / 438
= 646
Step2:
LCM(2, 689) = 1378
GCD(2, 689) = ( 2 x 689 ) / 1378
= 2 / 689
= 2
So, Greatest Common Divisor of 646, 438, 689 is 1
GCD of Numbers Calculation Examples
Here are some samples of GCD of Numbers calculations.
Greatest Common Divisor of 646, 438, 689
Given numbers are 646, 438, 689
The greatest common divisor of numbers 646, 438, 689 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 646, 438, 689 is 1.
FAQs on GCD of 646, 438, 689 Calculator
1. What is the GCD of 646, 438, 689?
GCD of given numbers 646, 438, 689 is 1
2. How to calculate the greatest common divisor of 646, 438, 689?
We can find the highest common divisor of 646, 438, 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 646, 438, 689 i.e 1.
3. How can I use the GCD of 646, 438, 689Calculator?
Out the numbers 646, 438, 689 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.