GCD of 66, 65, 42 Calculator

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023


Make use of GCD Calculator to determine the Greatest Common Divisor of 66, 65, 42 i.e. 1 largest integer that divides all the numbers equally.

GCD of 66, 65, 42 is 1

GCD(66, 65, 42) = 1

Ex: 10, 15, 20 (or) 24, 48, 96,45 (or) 78902, 89765, 12345

GCD of

GCD of numbers 66, 65, 42 is 1

GCD(66, 65, 42) = 1

GCD of 66,65,42 Calculator

GCDof 66,65,42 is 1

Given Input numbers are 66, 65, 42

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 65

List of positive integer divisors of 65 that divides 65 without a remainder.

1, 5, 13, 65

Divisors of 42

List of positive integer divisors of 42 that divides 42 without a remainder.

1, 2, 3, 6, 7, 14, 21, 42

Greatest Common Divisior

We found the divisors of 66, 65, 42 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 66, 65, 42 is 1.

Therefore, GCD of numbers 66, 65, 42 is 1

Finding GCD of 66, 65, 42 using Prime Factorization

Given Input Data is 66, 65, 42

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 65 is 5 x 13

Prime Factorization of 42 is 2 x 3 x 7

The above numbers do not have any common prime factor. So GCD is 1

Finding GCD of 66, 65, 42 using LCM Formula

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, 65) = 4290

GCD(66, 65) = ( 66 x 65 ) / 4290

GCD(66, 65) = 4290 / 4290

GCD(66, 65) = 1


Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 42

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

LCM(1, 42) = 42

GCD(1, 42) = ( 1 x 42 ) / 42

GCD(1, 42) = 42 / 42

GCD(1, 42) = 1

GCD of 66, 65, 42 is 1

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FAQs on GCD of numbers 66, 65, 42

1. What is the GCD of 66, 65, 42?

GCD of 66, 65, 42 is 1


2. Where do I get the detailed procedure to find GCD of 66, 65, 42?

You can find a detailed procedure to find GCD of 66, 65, 42 on our page.


3. How to find GCD of 66, 65, 42 on a calculator?

You can find the GCD of 66, 65, 42 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.