Online GCD Calculator is useful to find the GCD of 815, 681, 196, 390 quickly. Get the easiest ways to solve the greatest common divisor of 815, 681, 196, 390 i.e 1 in different methods as follows.
Given Input numbers are 815, 681, 196, 390
In the factoring method, we have to find the divisors of all numbers
Divisors of 815 :
The positive integer divisors of 815 that completely divides 815 are.
1, 5, 163, 815
Divisors of 681 :
The positive integer divisors of 681 that completely divides 681 are.
1, 3, 227, 681
Divisors of 196 :
The positive integer divisors of 196 that completely divides 196 are.
1, 2, 4, 7, 14, 28, 49, 98, 196
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
GCD of numbers is the greatest common divisor
So, the GCD (815, 681, 196, 390) = 1.
Given numbers are 815, 681, 196, 390
The list of prime factors of all numbers are
Prime factors of 815 are 5 x 163
Prime factors of 681 are 3 x 227
Prime factors of 196 are 2 x 2 x 7 x 7
Prime factors of 390 are 2 x 3 x 5 x 13
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 815, 681, 196, 390
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(815, 681) = 555015
GCD(815, 681) = ( 815 x 681 ) / 555015
= 815 / 681
= 815
Step2:
LCM(1, 196) = 196
GCD(1, 196) = ( 1 x 196 ) / 196
= 1 / 196
= 1
Step3:
LCM(1, 390) = 390
GCD(1, 390) = ( 1 x 390 ) / 390
= 1 / 390
= 1
So, Greatest Common Divisor of 815, 681, 196, 390 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 815, 681, 196, 390
The greatest common divisor of numbers 815, 681, 196, 390 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 815, 681, 196, 390 is 1.
1. What is the GCD of 815, 681, 196, 390?
GCD of given numbers 815, 681, 196, 390 is 1
2. How to calculate the greatest common divisor of 815, 681, 196, 390?
We can find the highest common divisor of 815, 681, 196, 390 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 815, 681, 196, 390 i.e 1.
3. How can I use the GCD of 815, 681, 196, 390Calculator?
Out the numbers 815, 681, 196, 390 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.