Online GCD Calculator is useful to find the GCD of 815, 385, 231, 981 quickly. Get the easiest ways to solve the greatest common divisor of 815, 385, 231, 981 i.e 1 in different methods as follows.
Given Input numbers are 815, 385, 231, 981
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 385 :
The positive integer divisors of 385 that completely divides 385 are.
1, 5, 7, 11, 35, 55, 77, 385
Divisors of 231 :
The positive integer divisors of 231 that completely divides 231 are.
1, 3, 7, 11, 21, 33, 77, 231
Divisors of 981 :
The positive integer divisors of 981 that completely divides 981 are.
1, 3, 9, 109, 327, 981
GCD of numbers is the greatest common divisor
So, the GCD (815, 385, 231, 981) = 1.
Given numbers are 815, 385, 231, 981
The list of prime factors of all numbers are
Prime factors of 815 are 5 x 163
Prime factors of 385 are 5 x 7 x 11
Prime factors of 231 are 3 x 7 x 11
Prime factors of 981 are 3 x 3 x 109
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 815, 385, 231, 981
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(815, 385) = 62755
GCD(815, 385) = ( 815 x 385 ) / 62755
= 815 / 385
= 815
Step2:
LCM(5, 231) = 1155
GCD(5, 231) = ( 5 x 231 ) / 1155
= 5 / 231
= 5
Step3:
LCM(1, 981) = 981
GCD(1, 981) = ( 1 x 981 ) / 981
= 1 / 981
= 1
So, Greatest Common Divisor of 815, 385, 231, 981 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 815, 385, 231, 981
The greatest common divisor of numbers 815, 385, 231, 981 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 815, 385, 231, 981 is 1.
1. What is the GCD of 815, 385, 231, 981?
GCD of given numbers 815, 385, 231, 981 is 1
2. How to calculate the greatest common divisor of 815, 385, 231, 981?
We can find the highest common divisor of 815, 385, 231, 981 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, 385, 231, 981 i.e 1.
3. How can I use the GCD of 815, 385, 231, 981Calculator?
Out the numbers 815, 385, 231, 981 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.