Online GCD Calculator is useful to find the GCD of 390, 645, 198 quickly. Get the easiest ways to solve the greatest common divisor of 390, 645, 198 i.e 3 in different methods as follows.
Given Input numbers are 390, 645, 198
In the factoring method, we have to find the divisors of all numbers
Divisors of 390 :
The positive integer divisors of 390 that completely divides 390 are.
1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390
Divisors of 645 :
The positive integer divisors of 645 that completely divides 645 are.
1, 3, 5, 15, 43, 129, 215, 645
Divisors of 198 :
The positive integer divisors of 198 that completely divides 198 are.
1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198
GCD of numbers is the greatest common divisor
So, the GCD (390, 645, 198) = 3.
Given numbers are 390, 645, 198
The list of prime factors of all numbers are
Prime factors of 390 are 2 x 3 x 5 x 13
Prime factors of 645 are 3 x 5 x 43
Prime factors of 198 are 2 x 3 x 3 x 11
The highest common occurrence is 31
Therefore, GCD of 390, 645, 198 is 3.
Given numbers are 390, 645, 198
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(390, 645) = 16770
GCD(390, 645) = ( 390 x 645 ) / 16770
= 390 / 645
= 390
Step2:
LCM(15, 198) = 990
GCD(15, 198) = ( 15 x 198 ) / 990
= 15 / 198
= 15
So, Greatest Common Divisor of 390, 645, 198 is 3
Here are some samples of GCD of Numbers calculations.
Given numbers are 390, 645, 198
The greatest common divisor of numbers 390, 645, 198 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 390, 645, 198 is 3.
1. What is the GCD of 390, 645, 198?
GCD of given numbers 390, 645, 198 is 3
2. How to calculate the greatest common divisor of 390, 645, 198?
We can find the highest common divisor of 390, 645, 198 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 390, 645, 198 i.e 3.
3. How can I use the GCD of 390, 645, 198Calculator?
Out the numbers 390, 645, 198 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.