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 780, 391, 648, 397 i.e. 1 largest integer that divides all the numbers equally.
GCD of 780, 391, 648, 397 is 1
GCD(780, 391, 648, 397) = 1
Ex: 10, 15, 20 (or) 24, 48, 96,45 (or) 78902, 89765, 12345
GCD of numbers 780, 391, 648, 397 is 1
GCD(780, 391, 648, 397) = 1
Given Input numbers are 780, 391, 648, 397
To find the GCD of numbers using factoring list out all the divisors of each number
Divisors of 780
List of positive integer divisors of 780 that divides 780 without a remainder.
1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780
Divisors of 391
List of positive integer divisors of 391 that divides 391 without a remainder.
1, 17, 23, 391
Divisors of 648
List of positive integer divisors of 648 that divides 648 without a remainder.
1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 648
Divisors of 397
List of positive integer divisors of 397 that divides 397 without a remainder.
1, 397
Greatest Common Divisior
We found the divisors of 780, 391, 648, 397 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 780, 391, 648, 397 is 1.
Therefore, GCD of numbers 780, 391, 648, 397 is 1
Given Input Data is 780, 391, 648, 397
Make a list of Prime Factors of all the given numbers initially
Prime Factorization of 780 is 2 x 2 x 3 x 5 x 13
Prime Factorization of 391 is 17 x 23
Prime Factorization of 648 is 2 x 2 x 2 x 3 x 3 x 3 x 3
Prime Factorization of 397 is 397
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(780, 391) = 304980
GCD(780, 391) = ( 780 x 391 ) / 304980
GCD(780, 391) = 304980 / 304980
GCD(780, 391) = 1
Step2:
Here we consider the GCD from the above i.e. 1 as first number and the next as 648
The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)
LCM(1, 648) = 648
GCD(1, 648) = ( 1 x 648 ) / 648
GCD(1, 648) = 648 / 648
GCD(1, 648) = 1
Step3:
Here we consider the GCD from the above i.e. 1 as first number and the next as 397
The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)
LCM(1, 397) = 397
GCD(1, 397) = ( 1 x 397 ) / 397
GCD(1, 397) = 397 / 397
GCD(1, 397) = 1
GCD of 780, 391, 648, 397 is 1
Here are some samples of GCD of Numbers calculations.
1. What is the GCD of 780, 391, 648, 397?
GCD of 780, 391, 648, 397 is 1
2. Where do I get the detailed procedure to find GCD of 780, 391, 648, 397?
You can find a detailed procedure to find GCD of 780, 391, 648, 397 on our page.
3. How to find GCD of 780, 391, 648, 397 on a calculator?
You can find the GCD of 780, 391, 648, 397 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.