GCD of 128, 251, 720, 220 Calculator

Given Input numbers are 128, 251, 720, 220

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

Divisors of 128

List of positive integer divisors of 128 that divides 128 without a remainder.

1, 2, 4, 8, 16, 32, 64, 128

Divisors of 251

List of positive integer divisors of 251 that divides 251 without a remainder.

1, 251

Divisors of 720

List of positive integer divisors of 720 that divides 720 without a remainder.

1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720

Divisors of 220

List of positive integer divisors of 220 that divides 220 without a remainder.

1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220

Greatest Common Divisior

We found the divisors of 128, 251, 720, 220 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 128, 251, 720, 220 is 1.

Therefore, GCD of numbers 128, 251, 720, 220 is 1

Given Input Data is 128, 251, 720, 220

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

Prime Factorization of 128 is 2 x 2 x 2 x 2 x 2 x 2 x 2

Prime Factorization of 251 is 251

Prime Factorization of 720 is 2 x 2 x 2 x 2 x 3 x 3 x 5

Prime Factorization of 220 is 2 x 2 x 5 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(128, 251) = 32128

GCD(128, 251) = ( 128 x 251 ) / 32128

GCD(128, 251) = 32128 / 32128

GCD(128, 251) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 720

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

LCM(1, 720) = 720

GCD(1, 720) = ( 1 x 720 ) / 720

GCD(1, 720) = 720 / 720

GCD(1, 720) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 220

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

LCM(1, 220) = 220

GCD(1, 220) = ( 1 x 220 ) / 220

GCD(1, 220) = 220 / 220

GCD(1, 220) = 1

GCD of 128, 251, 720, 220 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 898, 967, 929, 690
• GCD of 327, 342, 326, 449
• GCD of 112, 807, 532, 753
• GCD of 854, 374, 907, 298
• GCD of 393, 378, 222, 573

1. What is the GCD of 128, 251, 720, 220?

GCD of 128, 251, 720, 220 is 1

2. Where do I get the detailed procedure to find GCD of 128, 251, 720, 220?

You can find a detailed procedure to find GCD of 128, 251, 720, 220 on our page.

3. How to find GCD of 128, 251, 720, 220 on a calculator?

You can find the GCD of 128, 251, 720, 220 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.