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 27, 65, 13, 20 i.e. 1 largest integer that divides all the numbers equally.
GCD of 27, 65, 13, 20 is 1
GCD(27, 65, 13, 20) = 1
Ex: 10, 15, 20 (or) 24, 48, 96,45 (or) 78902, 89765, 12345
GCD of numbers 27, 65, 13, 20 is 1
GCD(27, 65, 13, 20) = 1
Given Input numbers are 27, 65, 13, 20
To find the GCD of numbers using factoring list out all the divisors of each number
Divisors of 27
List of positive integer divisors of 27 that divides 27 without a remainder.
1, 3, 9, 27
Divisors of 65
List of positive integer divisors of 65 that divides 65 without a remainder.
1, 5, 13, 65
Divisors of 13
List of positive integer divisors of 13 that divides 13 without a remainder.
1, 13
Divisors of 20
List of positive integer divisors of 20 that divides 20 without a remainder.
1, 2, 4, 5, 10, 20
Greatest Common Divisior
We found the divisors of 27, 65, 13, 20 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 27, 65, 13, 20 is 1.
Therefore, GCD of numbers 27, 65, 13, 20 is 1
Given Input Data is 27, 65, 13, 20
Make a list of Prime Factors of all the given numbers initially
Prime Factorization of 27 is 3 x 3 x 3
Prime Factorization of 65 is 5 x 13
Prime Factorization of 13 is 13
Prime Factorization of 20 is 2 x 2 x 5
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(27, 65) = 1755
GCD(27, 65) = ( 27 x 65 ) / 1755
GCD(27, 65) = 1755 / 1755
GCD(27, 65) = 1
Step2:
Here we consider the GCD from the above i.e. 1 as first number and the next as 13
The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)
LCM(1, 13) = 13
GCD(1, 13) = ( 1 x 13 ) / 13
GCD(1, 13) = 13 / 13
GCD(1, 13) = 1
Step3:
Here we consider the GCD from the above i.e. 1 as first number and the next as 20
The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)
LCM(1, 20) = 20
GCD(1, 20) = ( 1 x 20 ) / 20
GCD(1, 20) = 20 / 20
GCD(1, 20) = 1
GCD of 27, 65, 13, 20 is 1
Here are some samples of GCD of Numbers calculations.
1. What is the GCD of 27, 65, 13, 20?
GCD of 27, 65, 13, 20 is 1
2. Where do I get the detailed procedure to find GCD of 27, 65, 13, 20?
You can find a detailed procedure to find GCD of 27, 65, 13, 20 on our page.
3. How to find GCD of 27, 65, 13, 20 on a calculator?
You can find the GCD of 27, 65, 13, 20 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.