Online GCD Calculator is useful to find the GCD of 789, 815, 650, 642 quickly. Get the easiest ways to solve the greatest common divisor of 789, 815, 650, 642 i.e 1 in different methods as follows.
Given Input numbers are 789, 815, 650, 642
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 815 :
The positive integer divisors of 815 that completely divides 815 are.
1, 5, 163, 815
Divisors of 650 :
The positive integer divisors of 650 that completely divides 650 are.
1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650
Divisors of 642 :
The positive integer divisors of 642 that completely divides 642 are.
1, 2, 3, 6, 107, 214, 321, 642
GCD of numbers is the greatest common divisor
So, the GCD (789, 815, 650, 642) = 1.
Given numbers are 789, 815, 650, 642
The list of prime factors of all numbers are
Prime factors of 789 are 3 x 263
Prime factors of 815 are 5 x 163
Prime factors of 650 are 2 x 5 x 5 x 13
Prime factors of 642 are 2 x 3 x 107
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 789, 815, 650, 642
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(789, 815) = 643035
GCD(789, 815) = ( 789 x 815 ) / 643035
= 789 / 815
= 789
Step2:
LCM(1, 650) = 650
GCD(1, 650) = ( 1 x 650 ) / 650
= 1 / 650
= 1
Step3:
LCM(1, 642) = 642
GCD(1, 642) = ( 1 x 642 ) / 642
= 1 / 642
= 1
So, Greatest Common Divisor of 789, 815, 650, 642 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 789, 815, 650, 642
The greatest common divisor of numbers 789, 815, 650, 642 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 789, 815, 650, 642 is 1.
1. What is the GCD of 789, 815, 650, 642?
GCD of given numbers 789, 815, 650, 642 is 1
2. How to calculate the greatest common divisor of 789, 815, 650, 642?
We can find the highest common divisor of 789, 815, 650, 642 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, 815, 650, 642 i.e 1.
3. How can I use the GCD of 789, 815, 650, 642Calculator?
Out the numbers 789, 815, 650, 642 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.