GCD of 489, 705, 691 Calculator
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Online GCD Calculator is useful to find the GCD of 489, 705, 691 quickly. Get the easiest ways to solve the greatest common divisor of 489, 705, 691 i.e 1 in different methods as follows.
Given Input numbers are 489, 705, 691
In the factoring method, we have to find the divisors of all numbers
Divisors of 489 :
The positive integer divisors of 489 that completely divides 489 are.
1, 3, 163, 489
Divisors of 705 :
The positive integer divisors of 705 that completely divides 705 are.
1, 3, 5, 15, 47, 141, 235, 705
Divisors of 691 :
The positive integer divisors of 691 that completely divides 691 are.
1, 691
GCD of numbers is the greatest common divisor
So, the GCD (489, 705, 691) = 1.
Given numbers are 489, 705, 691
The list of prime factors of all numbers are
Prime factors of 489 are 3 x 163
Prime factors of 705 are 3 x 5 x 47
Prime factors of 691 are 691
The above numbers do not have any common prime factor. So GCD is 1
Steps to Calculate GCD of 489, 705, 691 using LCM Formula
Given numbers are 489, 705, 691
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(489, 705) = 114915
GCD(489, 705) = ( 489 x 705 ) / 114915
= 489 / 705
= 489
Step2:
LCM(3, 691) = 2073
GCD(3, 691) = ( 3 x 691 ) / 2073
= 3 / 691
= 3
So, Greatest Common Divisor of 489, 705, 691 is 1
GCD of Numbers Calculation Examples
Here are some samples of GCD of Numbers calculations.
Greatest Common Divisor of 489, 705, 691
Given numbers are 489, 705, 691
The greatest common divisor of numbers 489, 705, 691 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 489, 705, 691 is 1.
FAQs on GCD of 489, 705, 691 Calculator
1. What is the GCD of 489, 705, 691?
GCD of given numbers 489, 705, 691 is 1
2. How to calculate the greatest common divisor of 489, 705, 691?
We can find the highest common divisor of 489, 705, 691 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 489, 705, 691 i.e 1.
3. How can I use the GCD of 489, 705, 691Calculator?
Out the numbers 489, 705, 691 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.