GCD of 855, 720, 978 Calculator
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Online GCD Calculator is useful to find the GCD of 855, 720, 978 quickly. Get the easiest ways to solve the greatest common divisor of 855, 720, 978 i.e 3 in different methods as follows.
Given Input numbers are 855, 720, 978
In the factoring method, we have to find the divisors of all numbers
Divisors of 855 :
The positive integer divisors of 855 that completely divides 855 are.
1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855
Divisors of 720 :
The positive integer divisors of 720 that completely divides 720 are.
1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720
Divisors of 978 :
The positive integer divisors of 978 that completely divides 978 are.
1, 2, 3, 6, 163, 326, 489, 978
GCD of numbers is the greatest common divisor
So, the GCD (855, 720, 978) = 3.
Given numbers are 855, 720, 978
The list of prime factors of all numbers are
Prime factors of 855 are 3 x 3 x 5 x 19
Prime factors of 720 are 2 x 2 x 2 x 2 x 3 x 3 x 5
Prime factors of 978 are 2 x 3 x 163
The highest common occurrence is 31
Therefore, GCD of 855, 720, 978 is 3.
Steps to Calculate GCD of 855, 720, 978 using LCM Formula
Given numbers are 855, 720, 978
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(855, 720) = 13680
GCD(855, 720) = ( 855 x 720 ) / 13680
= 855 / 720
= 855
Step2:
LCM(45, 978) = 14670
GCD(45, 978) = ( 45 x 978 ) / 14670
= 45 / 978
= 45
So, Greatest Common Divisor of 855, 720, 978 is 3
GCD of Numbers Calculation Examples
Here are some samples of GCD of Numbers calculations.
Greatest Common Divisor of 855, 720, 978
Given numbers are 855, 720, 978
The greatest common divisor of numbers 855, 720, 978 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 855, 720, 978 is 3.
FAQs on GCD of 855, 720, 978 Calculator
1. What is the GCD of 855, 720, 978?
GCD of given numbers 855, 720, 978 is 3
2. How to calculate the greatest common divisor of 855, 720, 978?
We can find the highest common divisor of 855, 720, 978 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 855, 720, 978 i.e 3.
3. How can I use the GCD of 855, 720, 978Calculator?
Out the numbers 855, 720, 978 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.