GCD of 628, 115, 643, 170 Calculator

Given Input numbers are 628, 115, 643, 170

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

Divisors of 628

List of positive integer divisors of 628 that divides 628 without a remainder.

1, 2, 4, 157, 314, 628

Divisors of 115

List of positive integer divisors of 115 that divides 115 without a remainder.

1, 5, 23, 115

Divisors of 643

List of positive integer divisors of 643 that divides 643 without a remainder.

1, 643

Divisors of 170

List of positive integer divisors of 170 that divides 170 without a remainder.

1, 2, 5, 10, 17, 34, 85, 170

Greatest Common Divisior

We found the divisors of 628, 115, 643, 170 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 628, 115, 643, 170 is 1.

Therefore, GCD of numbers 628, 115, 643, 170 is 1

Given Input Data is 628, 115, 643, 170

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

Prime Factorization of 628 is 2 x 2 x 157

Prime Factorization of 115 is 5 x 23

Prime Factorization of 643 is 643

Prime Factorization of 170 is 2 x 5 x 17

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(628, 115) = 72220

GCD(628, 115) = ( 628 x 115 ) / 72220

GCD(628, 115) = 72220 / 72220

GCD(628, 115) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 643

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

LCM(1, 643) = 643

GCD(1, 643) = ( 1 x 643 ) / 643

GCD(1, 643) = 643 / 643

GCD(1, 643) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 170

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

LCM(1, 170) = 170

GCD(1, 170) = ( 1 x 170 ) / 170

GCD(1, 170) = 170 / 170

GCD(1, 170) = 1

GCD of 628, 115, 643, 170 is 1

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1. What is the GCD of 628, 115, 643, 170?

GCD of 628, 115, 643, 170 is 1

2. Where do I get the detailed procedure to find GCD of 628, 115, 643, 170?

You can find a detailed procedure to find GCD of 628, 115, 643, 170 on our page.

3. How to find GCD of 628, 115, 643, 170 on a calculator?

You can find the GCD of 628, 115, 643, 170 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.