GCD of 438, 623, 128, 551 Calculator

Given Input numbers are 438, 623, 128, 551

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

Divisors of 438

List of positive integer divisors of 438 that divides 438 without a remainder.

1, 2, 3, 6, 73, 146, 219, 438

Divisors of 623

List of positive integer divisors of 623 that divides 623 without a remainder.

1, 7, 89, 623

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 551

List of positive integer divisors of 551 that divides 551 without a remainder.

1, 19, 29, 551

Greatest Common Divisior

We found the divisors of 438, 623, 128, 551 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 438, 623, 128, 551 is 1.

Therefore, GCD of numbers 438, 623, 128, 551 is 1

Given Input Data is 438, 623, 128, 551

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

Prime Factorization of 438 is 2 x 3 x 73

Prime Factorization of 623 is 7 x 89

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

Prime Factorization of 551 is 19 x 29

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(438, 623) = 272874

GCD(438, 623) = ( 438 x 623 ) / 272874

GCD(438, 623) = 272874 / 272874

GCD(438, 623) = 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 551

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

LCM(1, 551) = 551

GCD(1, 551) = ( 1 x 551 ) / 551

GCD(1, 551) = 551 / 551

GCD(1, 551) = 1

GCD of 438, 623, 128, 551 is 1

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1. What is the GCD of 438, 623, 128, 551?

GCD of 438, 623, 128, 551 is 1

2. Where do I get the detailed procedure to find GCD of 438, 623, 128, 551?

You can find a detailed procedure to find GCD of 438, 623, 128, 551 on our page.

3. How to find GCD of 438, 623, 128, 551 on a calculator?

You can find the GCD of 438, 623, 128, 551 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.