Online GCD Calculator is useful to find the GCD of 391, 652, 421, 689 quickly. Get the easiest ways to solve the greatest common divisor of 391, 652, 421, 689 i.e 1 in different methods as follows.
Given Input numbers are 391, 652, 421, 689
In the factoring method, we have to find the divisors of all numbers
Divisors of 391 :
The positive integer divisors of 391 that completely divides 391 are.
1, 17, 23, 391
Divisors of 652 :
The positive integer divisors of 652 that completely divides 652 are.
1, 2, 4, 163, 326, 652
Divisors of 421 :
The positive integer divisors of 421 that completely divides 421 are.
1, 421
Divisors of 689 :
The positive integer divisors of 689 that completely divides 689 are.
1, 13, 53, 689
GCD of numbers is the greatest common divisor
So, the GCD (391, 652, 421, 689) = 1.
Given numbers are 391, 652, 421, 689
The list of prime factors of all numbers are
Prime factors of 391 are 17 x 23
Prime factors of 652 are 2 x 2 x 163
Prime factors of 421 are 421
Prime factors of 689 are 13 x 53
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 391, 652, 421, 689
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(391, 652) = 254932
GCD(391, 652) = ( 391 x 652 ) / 254932
= 391 / 652
= 391
Step2:
LCM(1, 421) = 421
GCD(1, 421) = ( 1 x 421 ) / 421
= 1 / 421
= 1
Step3:
LCM(1, 689) = 689
GCD(1, 689) = ( 1 x 689 ) / 689
= 1 / 689
= 1
So, Greatest Common Divisor of 391, 652, 421, 689 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 391, 652, 421, 689
The greatest common divisor of numbers 391, 652, 421, 689 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 391, 652, 421, 689 is 1.
1. What is the GCD of 391, 652, 421, 689?
GCD of given numbers 391, 652, 421, 689 is 1
2. How to calculate the greatest common divisor of 391, 652, 421, 689?
We can find the highest common divisor of 391, 652, 421, 689 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 391, 652, 421, 689 i.e 1.
3. How can I use the GCD of 391, 652, 421, 689Calculator?
Out the numbers 391, 652, 421, 689 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.