GCD of 275, 247, 20, 189 Calculator

Given Input numbers are 275, 247, 20, 189

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

Divisors of 275

List of positive integer divisors of 275 that divides 275 without a remainder.

1, 5, 11, 25, 55, 275

Divisors of 247

List of positive integer divisors of 247 that divides 247 without a remainder.

1, 13, 19, 247

Divisors of 20

List of positive integer divisors of 20 that divides 20 without a remainder.

1, 2, 4, 5, 10, 20

Divisors of 189

List of positive integer divisors of 189 that divides 189 without a remainder.

1, 3, 7, 9, 21, 27, 63, 189

Greatest Common Divisior

We found the divisors of 275, 247, 20, 189 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 275, 247, 20, 189 is 1.

Therefore, GCD of numbers 275, 247, 20, 189 is 1

Given Input Data is 275, 247, 20, 189

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

Prime Factorization of 275 is 5 x 5 x 11

Prime Factorization of 247 is 13 x 19

Prime Factorization of 20 is 2 x 2 x 5

Prime Factorization of 189 is 3 x 3 x 3 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(275, 247) = 67925

GCD(275, 247) = ( 275 x 247 ) / 67925

GCD(275, 247) = 67925 / 67925

GCD(275, 247) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 20

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

LCM(1, 20) = 20

GCD(1, 20) = ( 1 x 20 ) / 20

GCD(1, 20) = 20 / 20

GCD(1, 20) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 189

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

LCM(1, 189) = 189

GCD(1, 189) = ( 1 x 189 ) / 189

GCD(1, 189) = 189 / 189

GCD(1, 189) = 1

GCD of 275, 247, 20, 189 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 991, 658, 25, 463
• GCD of 716, 361, 55, 772
• GCD of 777, 865, 46, 648
• GCD of 642, 395, 88, 857
• GCD of 611, 991, 56, 531

1. What is the GCD of 275, 247, 20, 189?

GCD of 275, 247, 20, 189 is 1

2. Where do I get the detailed procedure to find GCD of 275, 247, 20, 189?

You can find a detailed procedure to find GCD of 275, 247, 20, 189 on our page.

3. How to find GCD of 275, 247, 20, 189 on a calculator?

You can find the GCD of 275, 247, 20, 189 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.