GCD of 30, 81, 77 Calculator

Given Input numbers are 30, 81, 77

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

Divisors of 30

List of positive integer divisors of 30 that divides 30 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30

Divisors of 81

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

1, 3, 9, 27, 81

Divisors of 77

List of positive integer divisors of 77 that divides 77 without a remainder.

1, 7, 11, 77

Greatest Common Divisior

We found the divisors of 30, 81, 77 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 30, 81, 77 is 1.

Therefore, GCD of numbers 30, 81, 77 is 1

Given Input Data is 30, 81, 77

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

Prime Factorization of 30 is 2 x 3 x 5

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

Prime Factorization of 77 is 7 x 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(30, 81) = 810

GCD(30, 81) = ( 30 x 81 ) / 810

GCD(30, 81) = 2430 / 810

GCD(30, 81) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 77

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

LCM(3, 77) = 231

GCD(3, 77) = ( 3 x 77 ) / 231

GCD(3, 77) = 231 / 231

GCD(3, 77) = 1

GCD of 30, 81, 77 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 60, 90, 62
• GCD of 42, 14, 60
• GCD of 35, 68, 56
• GCD of 58, 69, 76
• GCD of 32, 34, 17

1. What is the GCD of 30, 81, 77?

GCD of 30, 81, 77 is 1

2. Where do I get the detailed procedure to find GCD of 30, 81, 77?

You can find a detailed procedure to find GCD of 30, 81, 77 on our page.

3. How to find GCD of 30, 81, 77 on a calculator?

You can find the GCD of 30, 81, 77 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.