GCD of 815, 790, 54, 981 Calculator

Given Input numbers are 815, 790, 54, 981

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

Divisors of 815

List of positive integer divisors of 815 that divides 815 without a remainder.

1, 5, 163, 815

Divisors of 790

List of positive integer divisors of 790 that divides 790 without a remainder.

1, 2, 5, 10, 79, 158, 395, 790

Divisors of 54

List of positive integer divisors of 54 that divides 54 without a remainder.

1, 2, 3, 6, 9, 18, 27, 54

Divisors of 981

List of positive integer divisors of 981 that divides 981 without a remainder.

1, 3, 9, 109, 327, 981

Greatest Common Divisior

We found the divisors of 815, 790, 54, 981 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 815, 790, 54, 981 is 1.

Therefore, GCD of numbers 815, 790, 54, 981 is 1

Given Input Data is 815, 790, 54, 981

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

Prime Factorization of 815 is 5 x 163

Prime Factorization of 790 is 2 x 5 x 79

Prime Factorization of 54 is 2 x 3 x 3 x 3

Prime Factorization of 981 is 3 x 3 x 109

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(815, 790) = 128770

GCD(815, 790) = ( 815 x 790 ) / 128770

GCD(815, 790) = 643850 / 128770

GCD(815, 790) = 5

Step2:

Here we consider the GCD from the above i.e. 5 as first number and the next as 54

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

LCM(5, 54) = 270

GCD(5, 54) = ( 5 x 54 ) / 270

GCD(5, 54) = 270 / 270

GCD(5, 54) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 981

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

LCM(1, 981) = 981

GCD(1, 981) = ( 1 x 981 ) / 981

GCD(1, 981) = 981 / 981

GCD(1, 981) = 1

GCD of 815, 790, 54, 981 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 123, 241, 65, 969
• GCD of 609, 332, 56, 148
• GCD of 287, 731, 66, 544
• GCD of 600, 524, 91, 578
• GCD of 392, 963, 36, 581

1. What is the GCD of 815, 790, 54, 981?

GCD of 815, 790, 54, 981 is 1

2. Where do I get the detailed procedure to find GCD of 815, 790, 54, 981?

You can find a detailed procedure to find GCD of 815, 790, 54, 981 on our page.

3. How to find GCD of 815, 790, 54, 981 on a calculator?

You can find the GCD of 815, 790, 54, 981 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.