GCD of 551, 136, 398, 405 Calculator

Given Input numbers are 551, 136, 398, 405

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

Divisors of 551

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

1, 19, 29, 551

Divisors of 136

List of positive integer divisors of 136 that divides 136 without a remainder.

1, 2, 4, 8, 17, 34, 68, 136

Divisors of 398

List of positive integer divisors of 398 that divides 398 without a remainder.

1, 2, 199, 398

Divisors of 405

List of positive integer divisors of 405 that divides 405 without a remainder.

1, 3, 5, 9, 15, 27, 45, 81, 135, 405

Greatest Common Divisior

We found the divisors of 551, 136, 398, 405 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 551, 136, 398, 405 is 1.

Therefore, GCD of numbers 551, 136, 398, 405 is 1

Given Input Data is 551, 136, 398, 405

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

Prime Factorization of 551 is 19 x 29

Prime Factorization of 136 is 2 x 2 x 2 x 17

Prime Factorization of 398 is 2 x 199

Prime Factorization of 405 is 3 x 3 x 3 x 3 x 5

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(551, 136) = 74936

GCD(551, 136) = ( 551 x 136 ) / 74936

GCD(551, 136) = 74936 / 74936

GCD(551, 136) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 398

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

LCM(1, 398) = 398

GCD(1, 398) = ( 1 x 398 ) / 398

GCD(1, 398) = 398 / 398

GCD(1, 398) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 405

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

LCM(1, 405) = 405

GCD(1, 405) = ( 1 x 405 ) / 405

GCD(1, 405) = 405 / 405

GCD(1, 405) = 1

GCD of 551, 136, 398, 405 is 1

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1. What is the GCD of 551, 136, 398, 405?

GCD of 551, 136, 398, 405 is 1

2. Where do I get the detailed procedure to find GCD of 551, 136, 398, 405?

You can find a detailed procedure to find GCD of 551, 136, 398, 405 on our page.

3. How to find GCD of 551, 136, 398, 405 on a calculator?

You can find the GCD of 551, 136, 398, 405 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.