GCD of 644, 250, 221 Calculator

Given Input numbers are 644, 250, 221

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

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 250

List of positive integer divisors of 250 that divides 250 without a remainder.

1, 2, 5, 10, 25, 50, 125, 250

Divisors of 221

List of positive integer divisors of 221 that divides 221 without a remainder.

1, 13, 17, 221

Greatest Common Divisior

We found the divisors of 644, 250, 221 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 644, 250, 221 is 1.

Therefore, GCD of numbers 644, 250, 221 is 1

Given Input Data is 644, 250, 221

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

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

Prime Factorization of 250 is 2 x 5 x 5 x 5

Prime Factorization of 221 is 13 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(644, 250) = 80500

GCD(644, 250) = ( 644 x 250 ) / 80500

GCD(644, 250) = 161000 / 80500

GCD(644, 250) = 2

Step2:

Here we consider the GCD from the above i.e. 2 as first number and the next as 221

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

LCM(2, 221) = 442

GCD(2, 221) = ( 2 x 221 ) / 442

GCD(2, 221) = 442 / 442

GCD(2, 221) = 1

GCD of 644, 250, 221 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 239, 657, 503
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1. What is the GCD of 644, 250, 221?

GCD of 644, 250, 221 is 1

2. Where do I get the detailed procedure to find GCD of 644, 250, 221?

You can find a detailed procedure to find GCD of 644, 250, 221 on our page.

3. How to find GCD of 644, 250, 221 on a calculator?

You can find the GCD of 644, 250, 221 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.