Online GCD Calculator is useful to find the GCD of 390, 315, 994, 781 quickly. Get the easiest ways to solve the greatest common divisor of 390, 315, 994, 781 i.e 1 in different methods as follows.
Given Input numbers are 390, 315, 994, 781
In the factoring method, we have to find the divisors of all numbers
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
Divisors of 315 :
The positive integer divisors of 315 that completely divides 315 are.
1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315
Divisors of 994 :
The positive integer divisors of 994 that completely divides 994 are.
1, 2, 7, 14, 71, 142, 497, 994
Divisors of 781 :
The positive integer divisors of 781 that completely divides 781 are.
1, 11, 71, 781
GCD of numbers is the greatest common divisor
So, the GCD (390, 315, 994, 781) = 1.
Given numbers are 390, 315, 994, 781
The list of prime factors of all numbers are
Prime factors of 390 are 2 x 3 x 5 x 13
Prime factors of 315 are 3 x 3 x 5 x 7
Prime factors of 994 are 2 x 7 x 71
Prime factors of 781 are 11 x 71
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 390, 315, 994, 781
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(390, 315) = 8190
GCD(390, 315) = ( 390 x 315 ) / 8190
= 390 / 315
= 390
Step2:
LCM(15, 994) = 14910
GCD(15, 994) = ( 15 x 994 ) / 14910
= 15 / 994
= 15
Step3:
LCM(1, 781) = 781
GCD(1, 781) = ( 1 x 781 ) / 781
= 1 / 781
= 1
So, Greatest Common Divisor of 390, 315, 994, 781 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 390, 315, 994, 781
The greatest common divisor of numbers 390, 315, 994, 781 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 390, 315, 994, 781 is 1.
1. What is the GCD of 390, 315, 994, 781?
GCD of given numbers 390, 315, 994, 781 is 1
2. How to calculate the greatest common divisor of 390, 315, 994, 781?
We can find the highest common divisor of 390, 315, 994, 781 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 390, 315, 994, 781 i.e 1.
3. How can I use the GCD of 390, 315, 994, 781Calculator?
Out the numbers 390, 315, 994, 781 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.