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 787, 208, 21, 856 i.e. 1 largest integer that divides all the numbers equally.
GCD of 787, 208, 21, 856 is 1
GCD(787, 208, 21, 856) = 1
Ex: 10, 15, 20 (or) 24, 48, 96,45 (or) 78902, 89765, 12345
GCD of numbers 787, 208, 21, 856 is 1
GCD(787, 208, 21, 856) = 1
Given Input numbers are 787, 208, 21, 856
To find the GCD of numbers using factoring list out all the divisors of each number
Divisors of 787
List of positive integer divisors of 787 that divides 787 without a remainder.
1, 787
Divisors of 208
List of positive integer divisors of 208 that divides 208 without a remainder.
1, 2, 4, 8, 13, 16, 26, 52, 104, 208
Divisors of 21
List of positive integer divisors of 21 that divides 21 without a remainder.
1, 3, 7, 21
Divisors of 856
List of positive integer divisors of 856 that divides 856 without a remainder.
1, 2, 4, 8, 107, 214, 428, 856
Greatest Common Divisior
We found the divisors of 787, 208, 21, 856 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 787, 208, 21, 856 is 1.
Therefore, GCD of numbers 787, 208, 21, 856 is 1
Given Input Data is 787, 208, 21, 856
Make a list of Prime Factors of all the given numbers initially
Prime Factorization of 787 is 787
Prime Factorization of 208 is 2 x 2 x 2 x 2 x 13
Prime Factorization of 21 is 3 x 7
Prime Factorization of 856 is 2 x 2 x 2 x 107
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(787, 208) = 163696
GCD(787, 208) = ( 787 x 208 ) / 163696
GCD(787, 208) = 163696 / 163696
GCD(787, 208) = 1
Step2:
Here we consider the GCD from the above i.e. 1 as first number and the next as 21
The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)
LCM(1, 21) = 21
GCD(1, 21) = ( 1 x 21 ) / 21
GCD(1, 21) = 21 / 21
GCD(1, 21) = 1
Step3:
Here we consider the GCD from the above i.e. 1 as first number and the next as 856
The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)
LCM(1, 856) = 856
GCD(1, 856) = ( 1 x 856 ) / 856
GCD(1, 856) = 856 / 856
GCD(1, 856) = 1
GCD of 787, 208, 21, 856 is 1
Here are some samples of GCD of Numbers calculations.
1. What is the GCD of 787, 208, 21, 856?
GCD of 787, 208, 21, 856 is 1
2. Where do I get the detailed procedure to find GCD of 787, 208, 21, 856?
You can find a detailed procedure to find GCD of 787, 208, 21, 856 on our page.
3. How to find GCD of 787, 208, 21, 856 on a calculator?
You can find the GCD of 787, 208, 21, 856 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.