GCD of 811, 791, 390, 689 Calculator

Given Input numbers are 811, 791, 390, 689

To find the GCD of numbers using factoring list out all the divisors of each number

Divisors of 811

List of positive integer divisors of 811 that divides 811 without a remainder.

1, 811

Divisors of 791

List of positive integer divisors of 791 that divides 791 without a remainder.

1, 7, 113, 791

Divisors of 390

List of positive integer divisors of 390 that divides 390 without a remainder.

1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390

Divisors of 689

List of positive integer divisors of 689 that divides 689 without a remainder.

1, 13, 53, 689

Greatest Common Divisior

We found the divisors of 811, 791, 390, 689 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 811, 791, 390, 689 is 1.

Therefore, GCD of numbers 811, 791, 390, 689 is 1

Given Input Data is 811, 791, 390, 689

Make a list of Prime Factors of all the given numbers initially

Prime Factorization of 811 is 811

Prime Factorization of 791 is 7 x 113

Prime Factorization of 390 is 2 x 3 x 5 x 13

Prime Factorization of 689 is 13 x 53

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(811, 791) = 641501

GCD(811, 791) = ( 811 x 791 ) / 641501

GCD(811, 791) = 641501 / 641501

GCD(811, 791) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 390

The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)

LCM(1, 390) = 390

GCD(1, 390) = ( 1 x 390 ) / 390

GCD(1, 390) = 390 / 390

GCD(1, 390) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 689

The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)

LCM(1, 689) = 689

GCD(1, 689) = ( 1 x 689 ) / 689

GCD(1, 689) = 689 / 689

GCD(1, 689) = 1

GCD of 811, 791, 390, 689 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 704, 954, 713, 284
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• GCD of 988, 938, 947, 257
• GCD of 104, 524, 899, 204
• GCD of 290, 962, 128, 597

1. What is the GCD of 811, 791, 390, 689?

GCD of 811, 791, 390, 689 is 1

2. Where do I get the detailed procedure to find GCD of 811, 791, 390, 689?

You can find a detailed procedure to find GCD of 811, 791, 390, 689 on our page.

3. How to find GCD of 811, 791, 390, 689 on a calculator?

You can find the GCD of 811, 791, 390, 689 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.