Online GCD Calculator is useful to find the GCD of 385, 643, 380, 129 quickly. Get the easiest ways to solve the greatest common divisor of 385, 643, 380, 129 i.e 1 in different methods as follows.
Given Input numbers are 385, 643, 380, 129
In the factoring method, we have to find the divisors of all numbers
Divisors of 385 :
The positive integer divisors of 385 that completely divides 385 are.
1, 5, 7, 11, 35, 55, 77, 385
Divisors of 643 :
The positive integer divisors of 643 that completely divides 643 are.
1, 643
Divisors of 380 :
The positive integer divisors of 380 that completely divides 380 are.
1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380
Divisors of 129 :
The positive integer divisors of 129 that completely divides 129 are.
1, 3, 43, 129
GCD of numbers is the greatest common divisor
So, the GCD (385, 643, 380, 129) = 1.
Given numbers are 385, 643, 380, 129
The list of prime factors of all numbers are
Prime factors of 385 are 5 x 7 x 11
Prime factors of 643 are 643
Prime factors of 380 are 2 x 2 x 5 x 19
Prime factors of 129 are 3 x 43
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 385, 643, 380, 129
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(385, 643) = 247555
GCD(385, 643) = ( 385 x 643 ) / 247555
= 385 / 643
= 385
Step2:
LCM(1, 380) = 380
GCD(1, 380) = ( 1 x 380 ) / 380
= 1 / 380
= 1
Step3:
LCM(1, 129) = 129
GCD(1, 129) = ( 1 x 129 ) / 129
= 1 / 129
= 1
So, Greatest Common Divisor of 385, 643, 380, 129 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 385, 643, 380, 129
The greatest common divisor of numbers 385, 643, 380, 129 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 385, 643, 380, 129 is 1.
1. What is the GCD of 385, 643, 380, 129?
GCD of given numbers 385, 643, 380, 129 is 1
2. How to calculate the greatest common divisor of 385, 643, 380, 129?
We can find the highest common divisor of 385, 643, 380, 129 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 385, 643, 380, 129 i.e 1.
3. How can I use the GCD of 385, 643, 380, 129Calculator?
Out the numbers 385, 643, 380, 129 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.