Online GCD Calculator is useful to find the GCD of 395, 420, 318, 391 quickly. Get the easiest ways to solve the greatest common divisor of 395, 420, 318, 391 i.e 1 in different methods as follows.
Given Input numbers are 395, 420, 318, 391
In the factoring method, we have to find the divisors of all numbers
Divisors of 395 :
The positive integer divisors of 395 that completely divides 395 are.
1, 5, 79, 395
Divisors of 420 :
The positive integer divisors of 420 that completely divides 420 are.
1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
Divisors of 318 :
The positive integer divisors of 318 that completely divides 318 are.
1, 2, 3, 6, 53, 106, 159, 318
Divisors of 391 :
The positive integer divisors of 391 that completely divides 391 are.
1, 17, 23, 391
GCD of numbers is the greatest common divisor
So, the GCD (395, 420, 318, 391) = 1.
Given numbers are 395, 420, 318, 391
The list of prime factors of all numbers are
Prime factors of 395 are 5 x 79
Prime factors of 420 are 2 x 2 x 3 x 5 x 7
Prime factors of 318 are 2 x 3 x 53
Prime factors of 391 are 17 x 23
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 395, 420, 318, 391
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(395, 420) = 33180
GCD(395, 420) = ( 395 x 420 ) / 33180
= 395 / 420
= 395
Step2:
LCM(5, 318) = 1590
GCD(5, 318) = ( 5 x 318 ) / 1590
= 5 / 318
= 5
Step3:
LCM(1, 391) = 391
GCD(1, 391) = ( 1 x 391 ) / 391
= 1 / 391
= 1
So, Greatest Common Divisor of 395, 420, 318, 391 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 395, 420, 318, 391
The greatest common divisor of numbers 395, 420, 318, 391 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 395, 420, 318, 391 is 1.
1. What is the GCD of 395, 420, 318, 391?
GCD of given numbers 395, 420, 318, 391 is 1
2. How to calculate the greatest common divisor of 395, 420, 318, 391?
We can find the highest common divisor of 395, 420, 318, 391 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 395, 420, 318, 391 i.e 1.
3. How can I use the GCD of 395, 420, 318, 391Calculator?
Out the numbers 395, 420, 318, 391 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.