Online GCD Calculator is useful to find the GCD of 670, 209, 391 quickly. Get the easiest ways to solve the greatest common divisor of 670, 209, 391 i.e 1 in different methods as follows.
Given Input numbers are 670, 209, 391
In the factoring method, we have to find the divisors of all numbers
Divisors of 670 :
The positive integer divisors of 670 that completely divides 670 are.
1, 2, 5, 10, 67, 134, 335, 670
Divisors of 209 :
The positive integer divisors of 209 that completely divides 209 are.
1, 11, 19, 209
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 (670, 209, 391) = 1.
Given numbers are 670, 209, 391
The list of prime factors of all numbers are
Prime factors of 670 are 2 x 5 x 67
Prime factors of 209 are 11 x 19
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 670, 209, 391
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(670, 209) = 140030
GCD(670, 209) = ( 670 x 209 ) / 140030
= 670 / 209
= 670
Step2:
LCM(1, 391) = 391
GCD(1, 391) = ( 1 x 391 ) / 391
= 1 / 391
= 1
So, Greatest Common Divisor of 670, 209, 391 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 670, 209, 391
The greatest common divisor of numbers 670, 209, 391 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 670, 209, 391 is 1.
1. What is the GCD of 670, 209, 391?
GCD of given numbers 670, 209, 391 is 1
2. How to calculate the greatest common divisor of 670, 209, 391?
We can find the highest common divisor of 670, 209, 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 670, 209, 391 i.e 1.
3. How can I use the GCD of 670, 209, 391Calculator?
Out the numbers 670, 209, 391 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.