GCD of 855, 280, 817 Calculator

Given Input numbers are 855, 280, 817

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

Divisors of 855

List of positive integer divisors of 855 that divides 855 without a remainder.

1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855

Divisors of 280

List of positive integer divisors of 280 that divides 280 without a remainder.

1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280

Divisors of 817

List of positive integer divisors of 817 that divides 817 without a remainder.

1, 19, 43, 817

Greatest Common Divisior

We found the divisors of 855, 280, 817 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 855, 280, 817 is 1.

Therefore, GCD of numbers 855, 280, 817 is 1

Given Input Data is 855, 280, 817

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

Prime Factorization of 855 is 3 x 3 x 5 x 19

Prime Factorization of 280 is 2 x 2 x 2 x 5 x 7

Prime Factorization of 817 is 19 x 43

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(855, 280) = 47880

GCD(855, 280) = ( 855 x 280 ) / 47880

GCD(855, 280) = 239400 / 47880

GCD(855, 280) = 5

Step2:

Here we consider the GCD from the above i.e. 5 as first number and the next as 817

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

LCM(5, 817) = 4085

GCD(5, 817) = ( 5 x 817 ) / 4085

GCD(5, 817) = 4085 / 4085

GCD(5, 817) = 1

GCD of 855, 280, 817 is 1

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1. What is the GCD of 855, 280, 817?

GCD of 855, 280, 817 is 1

2. Where do I get the detailed procedure to find GCD of 855, 280, 817?

You can find a detailed procedure to find GCD of 855, 280, 817 on our page.

3. How to find GCD of 855, 280, 817 on a calculator?

You can find the GCD of 855, 280, 817 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.