Online GCD Calculator is useful to find the GCD of 189, 665, 123, 685 quickly. Get the easiest ways to solve the greatest common divisor of 189, 665, 123, 685 i.e 1 in different methods as follows.
Given Input numbers are 189, 665, 123, 685
In the factoring method, we have to find the divisors of all numbers
Divisors of 189 :
The positive integer divisors of 189 that completely divides 189 are.
1, 3, 7, 9, 21, 27, 63, 189
Divisors of 665 :
The positive integer divisors of 665 that completely divides 665 are.
1, 5, 7, 19, 35, 95, 133, 665
Divisors of 123 :
The positive integer divisors of 123 that completely divides 123 are.
1, 3, 41, 123
Divisors of 685 :
The positive integer divisors of 685 that completely divides 685 are.
1, 5, 137, 685
GCD of numbers is the greatest common divisor
So, the GCD (189, 665, 123, 685) = 1.
Given numbers are 189, 665, 123, 685
The list of prime factors of all numbers are
Prime factors of 189 are 3 x 3 x 3 x 7
Prime factors of 665 are 5 x 7 x 19
Prime factors of 123 are 3 x 41
Prime factors of 685 are 5 x 137
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 189, 665, 123, 685
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(189, 665) = 17955
GCD(189, 665) = ( 189 x 665 ) / 17955
= 189 / 665
= 189
Step2:
LCM(7, 123) = 861
GCD(7, 123) = ( 7 x 123 ) / 861
= 7 / 123
= 7
Step3:
LCM(1, 685) = 685
GCD(1, 685) = ( 1 x 685 ) / 685
= 1 / 685
= 1
So, Greatest Common Divisor of 189, 665, 123, 685 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 189, 665, 123, 685
The greatest common divisor of numbers 189, 665, 123, 685 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 189, 665, 123, 685 is 1.
1. What is the GCD of 189, 665, 123, 685?
GCD of given numbers 189, 665, 123, 685 is 1
2. How to calculate the greatest common divisor of 189, 665, 123, 685?
We can find the highest common divisor of 189, 665, 123, 685 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 189, 665, 123, 685 i.e 1.
3. How can I use the GCD of 189, 665, 123, 685Calculator?
Out the numbers 189, 665, 123, 685 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.