Online GCD Calculator is useful to find the GCD of 990, 815, 428, 394 quickly. Get the easiest ways to solve the greatest common divisor of 990, 815, 428, 394 i.e 1 in different methods as follows.
Given Input numbers are 990, 815, 428, 394
In the factoring method, we have to find the divisors of all numbers
Divisors of 990 :
The positive integer divisors of 990 that completely divides 990 are.
1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990
Divisors of 815 :
The positive integer divisors of 815 that completely divides 815 are.
1, 5, 163, 815
Divisors of 428 :
The positive integer divisors of 428 that completely divides 428 are.
1, 2, 4, 107, 214, 428
Divisors of 394 :
The positive integer divisors of 394 that completely divides 394 are.
1, 2, 197, 394
GCD of numbers is the greatest common divisor
So, the GCD (990, 815, 428, 394) = 1.
Given numbers are 990, 815, 428, 394
The list of prime factors of all numbers are
Prime factors of 990 are 2 x 3 x 3 x 5 x 11
Prime factors of 815 are 5 x 163
Prime factors of 428 are 2 x 2 x 107
Prime factors of 394 are 2 x 197
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 990, 815, 428, 394
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(990, 815) = 161370
GCD(990, 815) = ( 990 x 815 ) / 161370
= 990 / 815
= 990
Step2:
LCM(5, 428) = 2140
GCD(5, 428) = ( 5 x 428 ) / 2140
= 5 / 428
= 5
Step3:
LCM(1, 394) = 394
GCD(1, 394) = ( 1 x 394 ) / 394
= 1 / 394
= 1
So, Greatest Common Divisor of 990, 815, 428, 394 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 990, 815, 428, 394
The greatest common divisor of numbers 990, 815, 428, 394 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 990, 815, 428, 394 is 1.
1. What is the GCD of 990, 815, 428, 394?
GCD of given numbers 990, 815, 428, 394 is 1
2. How to calculate the greatest common divisor of 990, 815, 428, 394?
We can find the highest common divisor of 990, 815, 428, 394 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 990, 815, 428, 394 i.e 1.
3. How can I use the GCD of 990, 815, 428, 394Calculator?
Out the numbers 990, 815, 428, 394 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.