GCD of 685, 163, 153, 855 Calculator

Given Input numbers are 685, 163, 153, 855

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

Divisors of 685

List of positive integer divisors of 685 that divides 685 without a remainder.

1, 5, 137, 685

Divisors of 163

List of positive integer divisors of 163 that divides 163 without a remainder.

1, 163

Divisors of 153

List of positive integer divisors of 153 that divides 153 without a remainder.

1, 3, 9, 17, 51, 153

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

Greatest Common Divisior

We found the divisors of 685, 163, 153, 855 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 685, 163, 153, 855 is 1.

Therefore, GCD of numbers 685, 163, 153, 855 is 1

Given Input Data is 685, 163, 153, 855

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

Prime Factorization of 685 is 5 x 137

Prime Factorization of 163 is 163

Prime Factorization of 153 is 3 x 3 x 17

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

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(685, 163) = 111655

GCD(685, 163) = ( 685 x 163 ) / 111655

GCD(685, 163) = 111655 / 111655

GCD(685, 163) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 153

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

LCM(1, 153) = 153

GCD(1, 153) = ( 1 x 153 ) / 153

GCD(1, 153) = 153 / 153

GCD(1, 153) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 855

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

LCM(1, 855) = 855

GCD(1, 855) = ( 1 x 855 ) / 855

GCD(1, 855) = 855 / 855

GCD(1, 855) = 1

GCD of 685, 163, 153, 855 is 1

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1. What is the GCD of 685, 163, 153, 855?

GCD of 685, 163, 153, 855 is 1

2. Where do I get the detailed procedure to find GCD of 685, 163, 153, 855?

You can find a detailed procedure to find GCD of 685, 163, 153, 855 on our page.

3. How to find GCD of 685, 163, 153, 855 on a calculator?

You can find the GCD of 685, 163, 153, 855 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.