GCD of 63, 80, 81, 56 Calculator

Given Input numbers are 63, 80, 81, 56

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

Divisors of 63

List of positive integer divisors of 63 that divides 63 without a remainder.

1, 3, 7, 9, 21, 63

Divisors of 80

List of positive integer divisors of 80 that divides 80 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Divisors of 81

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

1, 3, 9, 27, 81

Divisors of 56

List of positive integer divisors of 56 that divides 56 without a remainder.

1, 2, 4, 7, 8, 14, 28, 56

Greatest Common Divisior

We found the divisors of 63, 80, 81, 56 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 63, 80, 81, 56 is 1.

Therefore, GCD of numbers 63, 80, 81, 56 is 1

Given Input Data is 63, 80, 81, 56

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

Prime Factorization of 63 is 3 x 3 x 7

Prime Factorization of 80 is 2 x 2 x 2 x 2 x 5

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

Prime Factorization of 56 is 2 x 2 x 2 x 7

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(63, 80) = 5040

GCD(63, 80) = ( 63 x 80 ) / 5040

GCD(63, 80) = 5040 / 5040

GCD(63, 80) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 81

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

LCM(1, 81) = 81

GCD(1, 81) = ( 1 x 81 ) / 81

GCD(1, 81) = 81 / 81

GCD(1, 81) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 56

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

LCM(1, 56) = 56

GCD(1, 56) = ( 1 x 56 ) / 56

GCD(1, 56) = 56 / 56

GCD(1, 56) = 1

GCD of 63, 80, 81, 56 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 68, 62, 93, 71
• GCD of 27, 97, 23, 16
• GCD of 22, 24, 23, 67
• GCD of 56, 81, 16, 73
• GCD of 30, 95, 84, 27

1. What is the GCD of 63, 80, 81, 56?

GCD of 63, 80, 81, 56 is 1

2. Where do I get the detailed procedure to find GCD of 63, 80, 81, 56?

You can find a detailed procedure to find GCD of 63, 80, 81, 56 on our page.

3. How to find GCD of 63, 80, 81, 56 on a calculator?

You can find the GCD of 63, 80, 81, 56 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.