GCD of 55, 64, 81, 99 Calculator

Given Input numbers are 55, 64, 81, 99

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

Divisors of 55

List of positive integer divisors of 55 that divides 55 without a remainder.

1, 5, 11, 55

Divisors of 64

List of positive integer divisors of 64 that divides 64 without a remainder.

1, 2, 4, 8, 16, 32, 64

Divisors of 81

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

1, 3, 9, 27, 81

Divisors of 99

List of positive integer divisors of 99 that divides 99 without a remainder.

1, 3, 9, 11, 33, 99

Greatest Common Divisior

We found the divisors of 55, 64, 81, 99 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 55, 64, 81, 99 is 1.

Therefore, GCD of numbers 55, 64, 81, 99 is 1

Given Input Data is 55, 64, 81, 99

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

Prime Factorization of 55 is 5 x 11

Prime Factorization of 64 is 2 x 2 x 2 x 2 x 2 x 2

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

Prime Factorization of 99 is 3 x 3 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(55, 64) = 3520

GCD(55, 64) = ( 55 x 64 ) / 3520

GCD(55, 64) = 3520 / 3520

GCD(55, 64) = 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 99

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

LCM(1, 99) = 99

GCD(1, 99) = ( 1 x 99 ) / 99

GCD(1, 99) = 99 / 99

GCD(1, 99) = 1

GCD of 55, 64, 81, 99 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 30, 68, 21, 39
• GCD of 63, 58, 78, 12
• GCD of 69, 48, 25, 22
• GCD of 46, 20, 94, 20
• GCD of 55, 98, 11, 36

1. What is the GCD of 55, 64, 81, 99?

GCD of 55, 64, 81, 99 is 1

2. Where do I get the detailed procedure to find GCD of 55, 64, 81, 99?

You can find a detailed procedure to find GCD of 55, 64, 81, 99 on our page.

3. How to find GCD of 55, 64, 81, 99 on a calculator?

You can find the GCD of 55, 64, 81, 99 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.