GCD of 645, 168, 51 Calculator
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Online GCD Calculator is useful to find the GCD of 645, 168, 51 quickly. Get the easiest ways to solve the greatest common divisor of 645, 168, 51 i.e 3 in different methods as follows.
Given Input numbers are 645, 168, 51
In the factoring method, we have to find the divisors of all numbers
Divisors of 645 :
The positive integer divisors of 645 that completely divides 645 are.
1, 3, 5, 15, 43, 129, 215, 645
Divisors of 168 :
The positive integer divisors of 168 that completely divides 168 are.
1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168
Divisors of 51 :
The positive integer divisors of 51 that completely divides 51 are.
1, 3, 17, 51
GCD of numbers is the greatest common divisor
So, the GCD (645, 168, 51) = 3.
Given numbers are 645, 168, 51
The list of prime factors of all numbers are
Prime factors of 645 are 3 x 5 x 43
Prime factors of 168 are 2 x 2 x 2 x 3 x 7
Prime factors of 51 are 3 x 17
The highest common occurrence is 31
Therefore, GCD of 645, 168, 51 is 3.
Steps to Calculate GCD of 645, 168, 51 using LCM Formula
Given numbers are 645, 168, 51
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(645, 168) = 36120
GCD(645, 168) = ( 645 x 168 ) / 36120
= 645 / 168
= 645
Step2:
LCM(3, 51) = 51
GCD(3, 51) = ( 3 x 51 ) / 51
= 3 / 51
= 3
So, Greatest Common Divisor of 645, 168, 51 is 3
GCD of Numbers Calculation Examples
Here are some samples of GCD of Numbers calculations.
Greatest Common Divisor of 645, 168, 51
Given numbers are 645, 168, 51
The greatest common divisor of numbers 645, 168, 51 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 645, 168, 51 is 3.
FAQs on GCD of 645, 168, 51 Calculator
1. What is the GCD of 645, 168, 51?
GCD of given numbers 645, 168, 51 is 3
2. How to calculate the greatest common divisor of 645, 168, 51?
We can find the highest common divisor of 645, 168, 51 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 645, 168, 51 i.e 3.
3. How can I use the GCD of 645, 168, 51Calculator?
Out the numbers 645, 168, 51 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.