GCD of 691, 129, 117, 645 Calculator
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Online GCD Calculator is useful to find the GCD of 691, 129, 117, 645 quickly. Get the easiest ways to solve the greatest common divisor of 691, 129, 117, 645 i.e 1 in different methods as follows.
Given Input numbers are 691, 129, 117, 645
In the factoring method, we have to find the divisors of all numbers
Divisors of 691 :
The positive integer divisors of 691 that completely divides 691 are.
1, 691
Divisors of 129 :
The positive integer divisors of 129 that completely divides 129 are.
1, 3, 43, 129
Divisors of 117 :
The positive integer divisors of 117 that completely divides 117 are.
1, 3, 9, 13, 39, 117
Divisors of 645 :
The positive integer divisors of 645 that completely divides 645 are.
1, 3, 5, 15, 43, 129, 215, 645
GCD of numbers is the greatest common divisor
So, the GCD (691, 129, 117, 645) = 1.
Given numbers are 691, 129, 117, 645
The list of prime factors of all numbers are
Prime factors of 691 are 691
Prime factors of 129 are 3 x 43
Prime factors of 117 are 3 x 3 x 13
Prime factors of 645 are 3 x 5 x 43
The above numbers do not have any common prime factor. So GCD is 1
Steps to Calculate GCD of 691, 129, 117, 645 using LCM Formula
Given numbers are 691, 129, 117, 645
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(691, 129) = 89139
GCD(691, 129) = ( 691 x 129 ) / 89139
= 691 / 129
= 691
Step2:
LCM(1, 117) = 117
GCD(1, 117) = ( 1 x 117 ) / 117
= 1 / 117
= 1
Step3:
LCM(1, 645) = 645
GCD(1, 645) = ( 1 x 645 ) / 645
= 1 / 645
= 1
So, Greatest Common Divisor of 691, 129, 117, 645 is 1
GCD of Numbers Calculation Examples
Here are some samples of GCD of Numbers calculations.
Greatest Common Divisor of 691, 129, 117, 645
Given numbers are 691, 129, 117, 645
The greatest common divisor of numbers 691, 129, 117, 645 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 691, 129, 117, 645 is 1.
FAQs on GCD of 691, 129, 117, 645 Calculator
1. What is the GCD of 691, 129, 117, 645?
GCD of given numbers 691, 129, 117, 645 is 1
2. How to calculate the greatest common divisor of 691, 129, 117, 645?
We can find the highest common divisor of 691, 129, 117, 645 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 691, 129, 117, 645 i.e 1.
3. How can I use the GCD of 691, 129, 117, 645Calculator?
Out the numbers 691, 129, 117, 645 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.