GCD of 787, 813, 390 Calculator
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023
Online GCD Calculator is useful to find the GCD of 787, 813, 390 quickly. Get the easiest ways to solve the greatest common divisor of 787, 813, 390 i.e 1 in different methods as follows.
Given Input numbers are 787, 813, 390
In the factoring method, we have to find the divisors of all numbers
Divisors of 787 :
The positive integer divisors of 787 that completely divides 787 are.
1, 787
Divisors of 813 :
The positive integer divisors of 813 that completely divides 813 are.
1, 3, 271, 813
Divisors of 390 :
The positive integer divisors of 390 that completely divides 390 are.
1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390
GCD of numbers is the greatest common divisor
So, the GCD (787, 813, 390) = 1.
Given numbers are 787, 813, 390
The list of prime factors of all numbers are
Prime factors of 787 are 787
Prime factors of 813 are 3 x 271
Prime factors of 390 are 2 x 3 x 5 x 13
The above numbers do not have any common prime factor. So GCD is 1
Steps to Calculate GCD of 787, 813, 390 using LCM Formula
Given numbers are 787, 813, 390
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(787, 813) = 639831
GCD(787, 813) = ( 787 x 813 ) / 639831
= 787 / 813
= 787
Step2:
LCM(1, 390) = 390
GCD(1, 390) = ( 1 x 390 ) / 390
= 1 / 390
= 1
So, Greatest Common Divisor of 787, 813, 390 is 1
GCD of Numbers Calculation Examples
Here are some samples of GCD of Numbers calculations.
Greatest Common Divisor of 787, 813, 390
Given numbers are 787, 813, 390
The greatest common divisor of numbers 787, 813, 390 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 787, 813, 390 is 1.
FAQs on GCD of 787, 813, 390 Calculator
1. What is the GCD of 787, 813, 390?
GCD of given numbers 787, 813, 390 is 1
2. How to calculate the greatest common divisor of 787, 813, 390?
We can find the highest common divisor of 787, 813, 390 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 787, 813, 390 i.e 1.
3. How can I use the GCD of 787, 813, 390Calculator?
Out the numbers 787, 813, 390 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.