GCD of 11, 642, 568, 815 Calculator

Given Input numbers are 11, 642, 568, 815

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

Divisors of 11

List of positive integer divisors of 11 that divides 11 without a remainder.

1, 11

Divisors of 642

List of positive integer divisors of 642 that divides 642 without a remainder.

1, 2, 3, 6, 107, 214, 321, 642

Divisors of 568

List of positive integer divisors of 568 that divides 568 without a remainder.

1, 2, 4, 8, 71, 142, 284, 568

Divisors of 815

List of positive integer divisors of 815 that divides 815 without a remainder.

1, 5, 163, 815

Greatest Common Divisior

We found the divisors of 11, 642, 568, 815 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 11, 642, 568, 815 is 1.

Therefore, GCD of numbers 11, 642, 568, 815 is 1

Given Input Data is 11, 642, 568, 815

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

Prime Factorization of 11 is 11

Prime Factorization of 642 is 2 x 3 x 107

Prime Factorization of 568 is 2 x 2 x 2 x 71

Prime Factorization of 815 is 5 x 163

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(11, 642) = 7062

GCD(11, 642) = ( 11 x 642 ) / 7062

GCD(11, 642) = 7062 / 7062

GCD(11, 642) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 568

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

LCM(1, 568) = 568

GCD(1, 568) = ( 1 x 568 ) / 568

GCD(1, 568) = 568 / 568

GCD(1, 568) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 815

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

LCM(1, 815) = 815

GCD(1, 815) = ( 1 x 815 ) / 815

GCD(1, 815) = 815 / 815

GCD(1, 815) = 1

GCD of 11, 642, 568, 815 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 85, 337, 599, 512
• GCD of 42, 230, 786, 716
• GCD of 19, 854, 907, 736
• GCD of 72, 102, 753, 746
• GCD of 54, 972, 173, 699

1. What is the GCD of 11, 642, 568, 815?

GCD of 11, 642, 568, 815 is 1

2. Where do I get the detailed procedure to find GCD of 11, 642, 568, 815?

You can find a detailed procedure to find GCD of 11, 642, 568, 815 on our page.

3. How to find GCD of 11, 642, 568, 815 on a calculator?

You can find the GCD of 11, 642, 568, 815 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.