GCD of 650, 639, 720 Calculator

Given Input numbers are 650, 639, 720

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

Divisors of 650

List of positive integer divisors of 650 that divides 650 without a remainder.

1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650

Divisors of 639

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

1, 3, 9, 71, 213, 639

Divisors of 720

List of positive integer divisors of 720 that divides 720 without a remainder.

1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720

Greatest Common Divisior

We found the divisors of 650, 639, 720 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 650, 639, 720 is 1.

Therefore, GCD of numbers 650, 639, 720 is 1

Given Input Data is 650, 639, 720

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

Prime Factorization of 650 is 2 x 5 x 5 x 13

Prime Factorization of 639 is 3 x 3 x 71

Prime Factorization of 720 is 2 x 2 x 2 x 2 x 3 x 3 x 5

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(650, 639) = 415350

GCD(650, 639) = ( 650 x 639 ) / 415350

GCD(650, 639) = 415350 / 415350

GCD(650, 639) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 720

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

LCM(1, 720) = 720

GCD(1, 720) = ( 1 x 720 ) / 720

GCD(1, 720) = 720 / 720

GCD(1, 720) = 1

GCD of 650, 639, 720 is 1

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1. What is the GCD of 650, 639, 720?

GCD of 650, 639, 720 is 1

2. Where do I get the detailed procedure to find GCD of 650, 639, 720?

You can find a detailed procedure to find GCD of 650, 639, 720 on our page.

3. How to find GCD of 650, 639, 720 on a calculator?

You can find the GCD of 650, 639, 720 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.