GCD of 809, 805, 15, 168 Calculator

Given Input numbers are 809, 805, 15, 168

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

Divisors of 809

List of positive integer divisors of 809 that divides 809 without a remainder.

1, 809

Divisors of 805

List of positive integer divisors of 805 that divides 805 without a remainder.

1, 5, 7, 23, 35, 115, 161, 805

Divisors of 15

List of positive integer divisors of 15 that divides 15 without a remainder.

1, 3, 5, 15

Divisors of 168

List of positive integer divisors of 168 that divides 168 without a remainder.

1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168

Greatest Common Divisior

We found the divisors of 809, 805, 15, 168 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 809, 805, 15, 168 is 1.

Therefore, GCD of numbers 809, 805, 15, 168 is 1

Given Input Data is 809, 805, 15, 168

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

Prime Factorization of 809 is 809

Prime Factorization of 805 is 5 x 7 x 23

Prime Factorization of 15 is 3 x 5

Prime Factorization of 168 is 2 x 2 x 2 x 3 x 7

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(809, 805) = 651245

GCD(809, 805) = ( 809 x 805 ) / 651245

GCD(809, 805) = 651245 / 651245

GCD(809, 805) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 15

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

LCM(1, 15) = 15

GCD(1, 15) = ( 1 x 15 ) / 15

GCD(1, 15) = 15 / 15

GCD(1, 15) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 168

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

LCM(1, 168) = 168

GCD(1, 168) = ( 1 x 168 ) / 168

GCD(1, 168) = 168 / 168

GCD(1, 168) = 1

GCD of 809, 805, 15, 168 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 420, 534, 38, 855
• GCD of 258, 555, 76, 252
• GCD of 218, 808, 18, 566
• GCD of 441, 243, 39, 916
• GCD of 683, 100, 43, 532

1. What is the GCD of 809, 805, 15, 168?

GCD of 809, 805, 15, 168 is 1

2. Where do I get the detailed procedure to find GCD of 809, 805, 15, 168?

You can find a detailed procedure to find GCD of 809, 805, 15, 168 on our page.

3. How to find GCD of 809, 805, 15, 168 on a calculator?

You can find the GCD of 809, 805, 15, 168 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.