GCD of 128, 245, 784, 808 Calculator

Given Input numbers are 128, 245, 784, 808

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 245

List of positive integer divisors of 245 that divides 245 without a remainder.

1, 5, 7, 35, 49, 245

Divisors of 784

List of positive integer divisors of 784 that divides 784 without a remainder.

1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784

Divisors of 808

List of positive integer divisors of 808 that divides 808 without a remainder.

1, 2, 4, 8, 101, 202, 404, 808

Greatest Common Divisior

We found the divisors of 128, 245, 784, 808 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 128, 245, 784, 808 is 1.

Therefore, GCD of numbers 128, 245, 784, 808 is 1

Given Input Data is 128, 245, 784, 808

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 245 is 5 x 7 x 7

Prime Factorization of 784 is 2 x 2 x 2 x 2 x 7 x 7

Prime Factorization of 808 is 2 x 2 x 2 x 101

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, 245) = 31360

GCD(128, 245) = ( 128 x 245 ) / 31360

GCD(128, 245) = 31360 / 31360

GCD(128, 245) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 784

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

LCM(1, 784) = 784

GCD(1, 784) = ( 1 x 784 ) / 784

GCD(1, 784) = 784 / 784

GCD(1, 784) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 808

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

LCM(1, 808) = 808

GCD(1, 808) = ( 1 x 808 ) / 808

GCD(1, 808) = 808 / 808

GCD(1, 808) = 1

GCD of 128, 245, 784, 808 is 1

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1. What is the GCD of 128, 245, 784, 808?

GCD of 128, 245, 784, 808 is 1

2. Where do I get the detailed procedure to find GCD of 128, 245, 784, 808?

You can find a detailed procedure to find GCD of 128, 245, 784, 808 on our page.

3. How to find GCD of 128, 245, 784, 808 on a calculator?

You can find the GCD of 128, 245, 784, 808 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.