GCD of 649, 391, 79, 120 Calculator
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Online GCD Calculator is useful to find the GCD of 649, 391, 79, 120 quickly. Get the easiest ways to solve the greatest common divisor of 649, 391, 79, 120 i.e 1 in different methods as follows.
Given Input numbers are 649, 391, 79, 120
In the factoring method, we have to find the divisors of all numbers
Divisors of 649 :
The positive integer divisors of 649 that completely divides 649 are.
1, 11, 59, 649
Divisors of 391 :
The positive integer divisors of 391 that completely divides 391 are.
1, 17, 23, 391
Divisors of 79 :
The positive integer divisors of 79 that completely divides 79 are.
1, 79
Divisors of 120 :
The positive integer divisors of 120 that completely divides 120 are.
1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120
GCD of numbers is the greatest common divisor
So, the GCD (649, 391, 79, 120) = 1.
Given numbers are 649, 391, 79, 120
The list of prime factors of all numbers are
Prime factors of 649 are 11 x 59
Prime factors of 391 are 17 x 23
Prime factors of 79 are 79
Prime factors of 120 are 2 x 2 x 2 x 3 x 5
The above numbers do not have any common prime factor. So GCD is 1
Steps to Calculate GCD of 649, 391, 79, 120 using LCM Formula
Given numbers are 649, 391, 79, 120
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(649, 391) = 253759
GCD(649, 391) = ( 649 x 391 ) / 253759
= 649 / 391
= 649
Step2:
LCM(1, 79) = 79
GCD(1, 79) = ( 1 x 79 ) / 79
= 1 / 79
= 1
Step3:
LCM(1, 120) = 120
GCD(1, 120) = ( 1 x 120 ) / 120
= 1 / 120
= 1
So, Greatest Common Divisor of 649, 391, 79, 120 is 1
GCD of Numbers Calculation Examples
Here are some samples of GCD of Numbers calculations.
Greatest Common Divisor of 649, 391, 79, 120
Given numbers are 649, 391, 79, 120
The greatest common divisor of numbers 649, 391, 79, 120 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 649, 391, 79, 120 is 1.
FAQs on GCD of 649, 391, 79, 120 Calculator
1. What is the GCD of 649, 391, 79, 120?
GCD of given numbers 649, 391, 79, 120 is 1
2. How to calculate the greatest common divisor of 649, 391, 79, 120?
We can find the highest common divisor of 649, 391, 79, 120 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 649, 391, 79, 120 i.e 1.
3. How can I use the GCD of 649, 391, 79, 120Calculator?
Out the numbers 649, 391, 79, 120 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.