Online GCD Calculator is useful to find the GCD of 642, 764, 742, 389 quickly. Get the easiest ways to solve the greatest common divisor of 642, 764, 742, 389 i.e 1 in different methods as follows.
Given Input numbers are 642, 764, 742, 389
In the factoring method, we have to find the divisors of all numbers
Divisors of 642 :
The positive integer divisors of 642 that completely divides 642 are.
1, 2, 3, 6, 107, 214, 321, 642
Divisors of 764 :
The positive integer divisors of 764 that completely divides 764 are.
1, 2, 4, 191, 382, 764
Divisors of 742 :
The positive integer divisors of 742 that completely divides 742 are.
1, 2, 7, 14, 53, 106, 371, 742
Divisors of 389 :
The positive integer divisors of 389 that completely divides 389 are.
1, 389
GCD of numbers is the greatest common divisor
So, the GCD (642, 764, 742, 389) = 1.
Given numbers are 642, 764, 742, 389
The list of prime factors of all numbers are
Prime factors of 642 are 2 x 3 x 107
Prime factors of 764 are 2 x 2 x 191
Prime factors of 742 are 2 x 7 x 53
Prime factors of 389 are 389
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 642, 764, 742, 389
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(642, 764) = 245244
GCD(642, 764) = ( 642 x 764 ) / 245244
= 642 / 764
= 642
Step2:
LCM(2, 742) = 742
GCD(2, 742) = ( 2 x 742 ) / 742
= 2 / 742
= 2
Step3:
LCM(2, 389) = 778
GCD(2, 389) = ( 2 x 389 ) / 778
= 2 / 389
= 2
So, Greatest Common Divisor of 642, 764, 742, 389 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 642, 764, 742, 389
The greatest common divisor of numbers 642, 764, 742, 389 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 642, 764, 742, 389 is 1.
1. What is the GCD of 642, 764, 742, 389?
GCD of given numbers 642, 764, 742, 389 is 1
2. How to calculate the greatest common divisor of 642, 764, 742, 389?
We can find the highest common divisor of 642, 764, 742, 389 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 642, 764, 742, 389 i.e 1.
3. How can I use the GCD of 642, 764, 742, 389Calculator?
Out the numbers 642, 764, 742, 389 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.