GCD of 798, 420, 639 Calculator
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Online GCD Calculator is useful to find the GCD of 798, 420, 639 quickly. Get the easiest ways to solve the greatest common divisor of 798, 420, 639 i.e 3 in different methods as follows.
Given Input numbers are 798, 420, 639
In the factoring method, we have to find the divisors of all numbers
Divisors of 798 :
The positive integer divisors of 798 that completely divides 798 are.
1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 266, 399, 798
Divisors of 420 :
The positive integer divisors of 420 that completely divides 420 are.
1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
Divisors of 639 :
The positive integer divisors of 639 that completely divides 639 are.
1, 3, 9, 71, 213, 639
GCD of numbers is the greatest common divisor
So, the GCD (798, 420, 639) = 3.
Given numbers are 798, 420, 639
The list of prime factors of all numbers are
Prime factors of 798 are 2 x 3 x 7 x 19
Prime factors of 420 are 2 x 2 x 3 x 5 x 7
Prime factors of 639 are 3 x 3 x 71
The highest common occurrence is 31
Therefore, GCD of 798, 420, 639 is 3.
Steps to Calculate GCD of 798, 420, 639 using LCM Formula
Given numbers are 798, 420, 639
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(798, 420) = 7980
GCD(798, 420) = ( 798 x 420 ) / 7980
= 798 / 420
= 798
Step2:
LCM(42, 639) = 8946
GCD(42, 639) = ( 42 x 639 ) / 8946
= 42 / 639
= 42
So, Greatest Common Divisor of 798, 420, 639 is 3
GCD of Numbers Calculation Examples
Here are some samples of GCD of Numbers calculations.
Greatest Common Divisor of 798, 420, 639
Given numbers are 798, 420, 639
The greatest common divisor of numbers 798, 420, 639 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 798, 420, 639 is 3.
FAQs on GCD of 798, 420, 639 Calculator
1. What is the GCD of 798, 420, 639?
GCD of given numbers 798, 420, 639 is 3
2. How to calculate the greatest common divisor of 798, 420, 639?
We can find the highest common divisor of 798, 420, 639 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 798, 420, 639 i.e 3.
3. How can I use the GCD of 798, 420, 639Calculator?
Out the numbers 798, 420, 639 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.