GCD of 66, 21, 11 Calculator

Given Input numbers are 66, 21, 11

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

Divisors of 66

List of positive integer divisors of 66 that divides 66 without a remainder.

1, 2, 3, 6, 11, 22, 33, 66

Divisors of 21

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

1, 3, 7, 21

Divisors of 11

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

1, 11

Greatest Common Divisior

We found the divisors of 66, 21, 11 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 66, 21, 11 is 1.

Therefore, GCD of numbers 66, 21, 11 is 1

Given Input Data is 66, 21, 11

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

Prime Factorization of 66 is 2 x 3 x 11

Prime Factorization of 21 is 3 x 7

Prime Factorization of 11 is 11

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(66, 21) = 462

GCD(66, 21) = ( 66 x 21 ) / 462

GCD(66, 21) = 1386 / 462

GCD(66, 21) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 11

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

LCM(3, 11) = 33

GCD(3, 11) = ( 3 x 11 ) / 33

GCD(3, 11) = 33 / 33

GCD(3, 11) = 1

GCD of 66, 21, 11 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 16, 83, 10
• GCD of 13, 10, 86
• GCD of 46, 63, 88
• GCD of 39, 69, 61
• GCD of 48, 47, 23

1. What is the GCD of 66, 21, 11?

GCD of 66, 21, 11 is 1

2. Where do I get the detailed procedure to find GCD of 66, 21, 11?

You can find a detailed procedure to find GCD of 66, 21, 11 on our page.

3. How to find GCD of 66, 21, 11 on a calculator?

You can find the GCD of 66, 21, 11 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.