Online GCD Calculator is useful to find the GCD of 789, 403, 687, 398 quickly. Get the easiest ways to solve the greatest common divisor of 789, 403, 687, 398 i.e 1 in different methods as follows.
Given Input numbers are 789, 403, 687, 398
In the factoring method, we have to find the divisors of all numbers
Divisors of 789 :
The positive integer divisors of 789 that completely divides 789 are.
1, 3, 263, 789
Divisors of 403 :
The positive integer divisors of 403 that completely divides 403 are.
1, 13, 31, 403
Divisors of 687 :
The positive integer divisors of 687 that completely divides 687 are.
1, 3, 229, 687
Divisors of 398 :
The positive integer divisors of 398 that completely divides 398 are.
1, 2, 199, 398
GCD of numbers is the greatest common divisor
So, the GCD (789, 403, 687, 398) = 1.
Given numbers are 789, 403, 687, 398
The list of prime factors of all numbers are
Prime factors of 789 are 3 x 263
Prime factors of 403 are 13 x 31
Prime factors of 687 are 3 x 229
Prime factors of 398 are 2 x 199
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 789, 403, 687, 398
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(789, 403) = 317967
GCD(789, 403) = ( 789 x 403 ) / 317967
= 789 / 403
= 789
Step2:
LCM(1, 687) = 687
GCD(1, 687) = ( 1 x 687 ) / 687
= 1 / 687
= 1
Step3:
LCM(1, 398) = 398
GCD(1, 398) = ( 1 x 398 ) / 398
= 1 / 398
= 1
So, Greatest Common Divisor of 789, 403, 687, 398 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 789, 403, 687, 398
The greatest common divisor of numbers 789, 403, 687, 398 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 789, 403, 687, 398 is 1.
1. What is the GCD of 789, 403, 687, 398?
GCD of given numbers 789, 403, 687, 398 is 1
2. How to calculate the greatest common divisor of 789, 403, 687, 398?
We can find the highest common divisor of 789, 403, 687, 398 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 789, 403, 687, 398 i.e 1.
3. How can I use the GCD of 789, 403, 687, 398Calculator?
Out the numbers 789, 403, 687, 398 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.