GCD of 261, 365, 128, 478 Calculator

Given Input numbers are 261, 365, 128, 478

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

Divisors of 261

List of positive integer divisors of 261 that divides 261 without a remainder.

1, 3, 9, 29, 87, 261

Divisors of 365

List of positive integer divisors of 365 that divides 365 without a remainder.

1, 5, 73, 365

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 478

List of positive integer divisors of 478 that divides 478 without a remainder.

1, 2, 239, 478

Greatest Common Divisior

We found the divisors of 261, 365, 128, 478 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 261, 365, 128, 478 is 1.

Therefore, GCD of numbers 261, 365, 128, 478 is 1

Given Input Data is 261, 365, 128, 478

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

Prime Factorization of 261 is 3 x 3 x 29

Prime Factorization of 365 is 5 x 73

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

Prime Factorization of 478 is 2 x 239

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(261, 365) = 95265

GCD(261, 365) = ( 261 x 365 ) / 95265

GCD(261, 365) = 95265 / 95265

GCD(261, 365) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 128

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

LCM(1, 128) = 128

GCD(1, 128) = ( 1 x 128 ) / 128

GCD(1, 128) = 128 / 128

GCD(1, 128) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 478

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

LCM(1, 478) = 478

GCD(1, 478) = ( 1 x 478 ) / 478

GCD(1, 478) = 478 / 478

GCD(1, 478) = 1

GCD of 261, 365, 128, 478 is 1

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1. What is the GCD of 261, 365, 128, 478?

GCD of 261, 365, 128, 478 is 1

2. Where do I get the detailed procedure to find GCD of 261, 365, 128, 478?

You can find a detailed procedure to find GCD of 261, 365, 128, 478 on our page.

3. How to find GCD of 261, 365, 128, 478 on a calculator?

You can find the GCD of 261, 365, 128, 478 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.