GCD of 203, 808, 21, 720 Calculator

Given Input numbers are 203, 808, 21, 720

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

Divisors of 203

List of positive integer divisors of 203 that divides 203 without a remainder.

1, 7, 29, 203

Divisors of 808

List of positive integer divisors of 808 that divides 808 without a remainder.

1, 2, 4, 8, 101, 202, 404, 808

Divisors of 21

List of positive integer divisors of 21 that divides 21 without a remainder.

1, 3, 7, 21

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 203, 808, 21, 720 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 203, 808, 21, 720 is 1.

Therefore, GCD of numbers 203, 808, 21, 720 is 1

Given Input Data is 203, 808, 21, 720

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

Prime Factorization of 203 is 7 x 29

Prime Factorization of 808 is 2 x 2 x 2 x 101

Prime Factorization of 21 is 3 x 7

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(203, 808) = 164024

GCD(203, 808) = ( 203 x 808 ) / 164024

GCD(203, 808) = 164024 / 164024

GCD(203, 808) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 21

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

LCM(1, 21) = 21

GCD(1, 21) = ( 1 x 21 ) / 21

GCD(1, 21) = 21 / 21

GCD(1, 21) = 1

Step3:

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 203, 808, 21, 720 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 660, 179, 38, 762
• GCD of 665, 520, 52, 368
• GCD of 429, 574, 43, 518
• GCD of 176, 223, 92, 637
• GCD of 339, 951, 29, 158

1. What is the GCD of 203, 808, 21, 720?

GCD of 203, 808, 21, 720 is 1

2. Where do I get the detailed procedure to find GCD of 203, 808, 21, 720?

You can find a detailed procedure to find GCD of 203, 808, 21, 720 on our page.

3. How to find GCD of 203, 808, 21, 720 on a calculator?

You can find the GCD of 203, 808, 21, 720 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.