GCD of 50, 639, 644, 173 Calculator

Given Input numbers are 50, 639, 644, 173

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

Divisors of 50

List of positive integer divisors of 50 that divides 50 without a remainder.

1, 2, 5, 10, 25, 50

Divisors of 639

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

1, 3, 9, 71, 213, 639

Divisors of 644

List of positive integer divisors of 644 that divides 644 without a remainder.

1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644

Divisors of 173

List of positive integer divisors of 173 that divides 173 without a remainder.

1, 173

Greatest Common Divisior

We found the divisors of 50, 639, 644, 173 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 50, 639, 644, 173 is 1.

Therefore, GCD of numbers 50, 639, 644, 173 is 1

Given Input Data is 50, 639, 644, 173

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

Prime Factorization of 50 is 2 x 5 x 5

Prime Factorization of 639 is 3 x 3 x 71

Prime Factorization of 644 is 2 x 2 x 7 x 23

Prime Factorization of 173 is 173

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(50, 639) = 31950

GCD(50, 639) = ( 50 x 639 ) / 31950

GCD(50, 639) = 31950 / 31950

GCD(50, 639) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 644

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

LCM(1, 644) = 644

GCD(1, 644) = ( 1 x 644 ) / 644

GCD(1, 644) = 644 / 644

GCD(1, 644) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 173

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

LCM(1, 173) = 173

GCD(1, 173) = ( 1 x 173 ) / 173

GCD(1, 173) = 173 / 173

GCD(1, 173) = 1

GCD of 50, 639, 644, 173 is 1

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1. What is the GCD of 50, 639, 644, 173?

GCD of 50, 639, 644, 173 is 1

2. Where do I get the detailed procedure to find GCD of 50, 639, 644, 173?

You can find a detailed procedure to find GCD of 50, 639, 644, 173 on our page.

3. How to find GCD of 50, 639, 644, 173 on a calculator?

You can find the GCD of 50, 639, 644, 173 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.