GCD of 15, 197, 418, 817 Calculator

Given Input numbers are 15, 197, 418, 817

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

Divisors of 15

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

1, 3, 5, 15

Divisors of 197

List of positive integer divisors of 197 that divides 197 without a remainder.

1, 197

Divisors of 418

List of positive integer divisors of 418 that divides 418 without a remainder.

1, 2, 11, 19, 22, 38, 209, 418

Divisors of 817

List of positive integer divisors of 817 that divides 817 without a remainder.

1, 19, 43, 817

Greatest Common Divisior

We found the divisors of 15, 197, 418, 817 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 15, 197, 418, 817 is 1.

Therefore, GCD of numbers 15, 197, 418, 817 is 1

Given Input Data is 15, 197, 418, 817

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

Prime Factorization of 15 is 3 x 5

Prime Factorization of 197 is 197

Prime Factorization of 418 is 2 x 11 x 19

Prime Factorization of 817 is 19 x 43

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(15, 197) = 2955

GCD(15, 197) = ( 15 x 197 ) / 2955

GCD(15, 197) = 2955 / 2955

GCD(15, 197) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 418

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

LCM(1, 418) = 418

GCD(1, 418) = ( 1 x 418 ) / 418

GCD(1, 418) = 418 / 418

GCD(1, 418) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 817

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

LCM(1, 817) = 817

GCD(1, 817) = ( 1 x 817 ) / 817

GCD(1, 817) = 817 / 817

GCD(1, 817) = 1

GCD of 15, 197, 418, 817 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 55, 378, 109, 782
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• GCD of 32, 585, 363, 989
• GCD of 71, 812, 444, 469

1. What is the GCD of 15, 197, 418, 817?

GCD of 15, 197, 418, 817 is 1

2. Where do I get the detailed procedure to find GCD of 15, 197, 418, 817?

You can find a detailed procedure to find GCD of 15, 197, 418, 817 on our page.

3. How to find GCD of 15, 197, 418, 817 on a calculator?

You can find the GCD of 15, 197, 418, 817 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.