GCD of 255, 639, 45, 668 Calculator

Given Input numbers are 255, 639, 45, 668

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

Divisors of 255

List of positive integer divisors of 255 that divides 255 without a remainder.

1, 3, 5, 15, 17, 51, 85, 255

Divisors of 639

List of positive integer divisors of 639 that divides 639 without a remainder.

1, 3, 9, 71, 213, 639

Divisors of 45

List of positive integer divisors of 45 that divides 45 without a remainder.

1, 3, 5, 9, 15, 45

Divisors of 668

List of positive integer divisors of 668 that divides 668 without a remainder.

1, 2, 4, 167, 334, 668

Greatest Common Divisior

We found the divisors of 255, 639, 45, 668 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 255, 639, 45, 668 is 1.

Therefore, GCD of numbers 255, 639, 45, 668 is 1

Given Input Data is 255, 639, 45, 668

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

Prime Factorization of 255 is 3 x 5 x 17

Prime Factorization of 639 is 3 x 3 x 71

Prime Factorization of 45 is 3 x 3 x 5

Prime Factorization of 668 is 2 x 2 x 167

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(255, 639) = 54315

GCD(255, 639) = ( 255 x 639 ) / 54315

GCD(255, 639) = 162945 / 54315

GCD(255, 639) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 45

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

LCM(3, 45) = 45

GCD(3, 45) = ( 3 x 45 ) / 45

GCD(3, 45) = 135 / 45

GCD(3, 45) = 3

Step3:

Here we consider the GCD from the above i.e. 3 as first number and the next as 668

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

LCM(3, 668) = 2004

GCD(3, 668) = ( 3 x 668 ) / 2004

GCD(3, 668) = 2004 / 2004

GCD(3, 668) = 1

GCD of 255, 639, 45, 668 is 1

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1. What is the GCD of 255, 639, 45, 668?

GCD of 255, 639, 45, 668 is 1

2. Where do I get the detailed procedure to find GCD of 255, 639, 45, 668?

You can find a detailed procedure to find GCD of 255, 639, 45, 668 on our page.

3. How to find GCD of 255, 639, 45, 668 on a calculator?

You can find the GCD of 255, 639, 45, 668 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.