GCD of 798, 687, 671, 155 Calculator

Given Input numbers are 798, 687, 671, 155

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

Divisors of 798

List of positive integer divisors of 798 that divides 798 without a remainder.

1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 266, 399, 798

Divisors of 687

List of positive integer divisors of 687 that divides 687 without a remainder.

1, 3, 229, 687

Divisors of 671

List of positive integer divisors of 671 that divides 671 without a remainder.

1, 11, 61, 671

Divisors of 155

List of positive integer divisors of 155 that divides 155 without a remainder.

1, 5, 31, 155

Greatest Common Divisior

We found the divisors of 798, 687, 671, 155 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 798, 687, 671, 155 is 1.

Therefore, GCD of numbers 798, 687, 671, 155 is 1

Given Input Data is 798, 687, 671, 155

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

Prime Factorization of 798 is 2 x 3 x 7 x 19

Prime Factorization of 687 is 3 x 229

Prime Factorization of 671 is 11 x 61

Prime Factorization of 155 is 5 x 31

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(798, 687) = 182742

GCD(798, 687) = ( 798 x 687 ) / 182742

GCD(798, 687) = 548226 / 182742

GCD(798, 687) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 671

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

LCM(3, 671) = 2013

GCD(3, 671) = ( 3 x 671 ) / 2013

GCD(3, 671) = 2013 / 2013

GCD(3, 671) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 155

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

LCM(1, 155) = 155

GCD(1, 155) = ( 1 x 155 ) / 155

GCD(1, 155) = 155 / 155

GCD(1, 155) = 1

GCD of 798, 687, 671, 155 is 1

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1. What is the GCD of 798, 687, 671, 155?

GCD of 798, 687, 671, 155 is 1

2. Where do I get the detailed procedure to find GCD of 798, 687, 671, 155?

You can find a detailed procedure to find GCD of 798, 687, 671, 155 on our page.

3. How to find GCD of 798, 687, 671, 155 on a calculator?

You can find the GCD of 798, 687, 671, 155 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.