GCD of 65, 25, 81 Calculator

Given Input numbers are 65, 25, 81

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

Divisors of 65

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

1, 5, 13, 65

Divisors of 25

List of positive integer divisors of 25 that divides 25 without a remainder.

1, 5, 25

Divisors of 81

List of positive integer divisors of 81 that divides 81 without a remainder.

1, 3, 9, 27, 81

Greatest Common Divisior

We found the divisors of 65, 25, 81 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 65, 25, 81 is 1.

Therefore, GCD of numbers 65, 25, 81 is 1

Given Input Data is 65, 25, 81

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

Prime Factorization of 65 is 5 x 13

Prime Factorization of 25 is 5 x 5

Prime Factorization of 81 is 3 x 3 x 3 x 3

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(65, 25) = 325

GCD(65, 25) = ( 65 x 25 ) / 325

GCD(65, 25) = 1625 / 325

GCD(65, 25) = 5

Step2:

Here we consider the GCD from the above i.e. 5 as first number and the next as 81

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

LCM(5, 81) = 405

GCD(5, 81) = ( 5 x 81 ) / 405

GCD(5, 81) = 405 / 405

GCD(5, 81) = 1

GCD of 65, 25, 81 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 21, 91, 91
• GCD of 66, 54, 25
• GCD of 52, 90, 43
• GCD of 14, 10, 41
• GCD of 31, 23, 71

1. What is the GCD of 65, 25, 81?

GCD of 65, 25, 81 is 1

2. Where do I get the detailed procedure to find GCD of 65, 25, 81?

You can find a detailed procedure to find GCD of 65, 25, 81 on our page.

3. How to find GCD of 65, 25, 81 on a calculator?

You can find the GCD of 65, 25, 81 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.