Online GCD Calculator is useful to find the GCD of 638, 478, 187, 198 quickly. Get the easiest ways to solve the greatest common divisor of 638, 478, 187, 198 i.e 1 in different methods as follows.
Given Input numbers are 638, 478, 187, 198
In the factoring method, we have to find the divisors of all numbers
Divisors of 638 :
The positive integer divisors of 638 that completely divides 638 are.
1, 2, 11, 22, 29, 58, 319, 638
Divisors of 478 :
The positive integer divisors of 478 that completely divides 478 are.
1, 2, 239, 478
Divisors of 187 :
The positive integer divisors of 187 that completely divides 187 are.
1, 11, 17, 187
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 (638, 478, 187, 198) = 1.
Given numbers are 638, 478, 187, 198
The list of prime factors of all numbers are
Prime factors of 638 are 2 x 11 x 29
Prime factors of 478 are 2 x 239
Prime factors of 187 are 11 x 17
Prime factors of 198 are 2 x 3 x 3 x 11
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 638, 478, 187, 198
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(638, 478) = 152482
GCD(638, 478) = ( 638 x 478 ) / 152482
= 638 / 478
= 638
Step2:
LCM(2, 187) = 374
GCD(2, 187) = ( 2 x 187 ) / 374
= 2 / 187
= 2
Step3:
LCM(1, 198) = 198
GCD(1, 198) = ( 1 x 198 ) / 198
= 1 / 198
= 1
So, Greatest Common Divisor of 638, 478, 187, 198 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 638, 478, 187, 198
The greatest common divisor of numbers 638, 478, 187, 198 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 638, 478, 187, 198 is 1.
1. What is the GCD of 638, 478, 187, 198?
GCD of given numbers 638, 478, 187, 198 is 1
2. How to calculate the greatest common divisor of 638, 478, 187, 198?
We can find the highest common divisor of 638, 478, 187, 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 638, 478, 187, 198 i.e 1.
3. How can I use the GCD of 638, 478, 187, 198Calculator?
Out the numbers 638, 478, 187, 198 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.