GCD of 72, 55, 90, 56 Calculator

Given Input numbers are 72, 55, 90, 56

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

Divisors of 72

List of positive integer divisors of 72 that divides 72 without a remainder.

1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72

Divisors of 55

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

1, 5, 11, 55

Divisors of 90

List of positive integer divisors of 90 that divides 90 without a remainder.

1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

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 72, 55, 90, 56 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 72, 55, 90, 56 is 1.

Therefore, GCD of numbers 72, 55, 90, 56 is 1

Given Input Data is 72, 55, 90, 56

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

Prime Factorization of 72 is 2 x 2 x 2 x 3 x 3

Prime Factorization of 55 is 5 x 11

Prime Factorization of 90 is 2 x 3 x 3 x 5

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(72, 55) = 3960

GCD(72, 55) = ( 72 x 55 ) / 3960

GCD(72, 55) = 3960 / 3960

GCD(72, 55) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 90

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

LCM(1, 90) = 90

GCD(1, 90) = ( 1 x 90 ) / 90

GCD(1, 90) = 90 / 90

GCD(1, 90) = 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 72, 55, 90, 56 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 27, 34, 22, 88
• GCD of 42, 41, 14, 51
• GCD of 97, 91, 71, 58
• GCD of 12, 84, 22, 41
• GCD of 13, 52, 99, 33

1. What is the GCD of 72, 55, 90, 56?

GCD of 72, 55, 90, 56 is 1

2. Where do I get the detailed procedure to find GCD of 72, 55, 90, 56?

You can find a detailed procedure to find GCD of 72, 55, 90, 56 on our page.

3. How to find GCD of 72, 55, 90, 56 on a calculator?

You can find the GCD of 72, 55, 90, 56 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.