GCD of 155, 646, 655 Calculator

Given Input numbers are 155, 646, 655

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

Divisors of 155

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

1, 5, 31, 155

Divisors of 646

List of positive integer divisors of 646 that divides 646 without a remainder.

1, 2, 17, 19, 34, 38, 323, 646

Divisors of 655

List of positive integer divisors of 655 that divides 655 without a remainder.

1, 5, 131, 655

Greatest Common Divisior

We found the divisors of 155, 646, 655 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 155, 646, 655 is 1.

Therefore, GCD of numbers 155, 646, 655 is 1

Given Input Data is 155, 646, 655

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

Prime Factorization of 155 is 5 x 31

Prime Factorization of 646 is 2 x 17 x 19

Prime Factorization of 655 is 5 x 131

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(155, 646) = 100130

GCD(155, 646) = ( 155 x 646 ) / 100130

GCD(155, 646) = 100130 / 100130

GCD(155, 646) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 655

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

LCM(1, 655) = 655

GCD(1, 655) = ( 1 x 655 ) / 655

GCD(1, 655) = 655 / 655

GCD(1, 655) = 1

GCD of 155, 646, 655 is 1

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1. What is the GCD of 155, 646, 655?

GCD of 155, 646, 655 is 1

2. Where do I get the detailed procedure to find GCD of 155, 646, 655?

You can find a detailed procedure to find GCD of 155, 646, 655 on our page.

3. How to find GCD of 155, 646, 655 on a calculator?

You can find the GCD of 155, 646, 655 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.