Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Make use of GCD Calculator to determine the Greatest Common Divisor of 638, 643, 68 i.e. 1 largest integer that divides all the numbers equally.
GCD of 638, 643, 68 is 1
GCD(638, 643, 68) = 1
Ex: 10, 15, 20 (or) 24, 48, 96,45 (or) 78902, 89765, 12345
GCD of numbers 638, 643, 68 is 1
GCD(638, 643, 68) = 1
Given Input numbers are 638, 643, 68
To find the GCD of numbers using factoring list out all the divisors of each number
Divisors of 638
List of positive integer divisors of 638 that divides 638 without a remainder.
1, 2, 11, 22, 29, 58, 319, 638
Divisors of 643
List of positive integer divisors of 643 that divides 643 without a remainder.
1, 643
Divisors of 68
List of positive integer divisors of 68 that divides 68 without a remainder.
1, 2, 4, 17, 34, 68
Greatest Common Divisior
We found the divisors of 638, 643, 68 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 638, 643, 68 is 1.
Therefore, GCD of numbers 638, 643, 68 is 1
Given Input Data is 638, 643, 68
Make a list of Prime Factors of all the given numbers initially
Prime Factorization of 638 is 2 x 11 x 29
Prime Factorization of 643 is 643
Prime Factorization of 68 is 2 x 2 x 17
The above numbers do not have any common prime factor. So GCD is 1
Step1:
Let's calculate the GCD of first two numbers
The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)
LCM(638, 643) = 410234
GCD(638, 643) = ( 638 x 643 ) / 410234
GCD(638, 643) = 410234 / 410234
GCD(638, 643) = 1
Step2:
Here we consider the GCD from the above i.e. 1 as first number and the next as 68
The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)
LCM(1, 68) = 68
GCD(1, 68) = ( 1 x 68 ) / 68
GCD(1, 68) = 68 / 68
GCD(1, 68) = 1
GCD of 638, 643, 68 is 1
Here are some samples of GCD of Numbers calculations.
1. What is the GCD of 638, 643, 68?
GCD of 638, 643, 68 is 1
2. Where do I get the detailed procedure to find GCD of 638, 643, 68?
You can find a detailed procedure to find GCD of 638, 643, 68 on our page.
3. How to find GCD of 638, 643, 68 on a calculator?
You can find the GCD of 638, 643, 68 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.