GCD of 400, 855, 80, 811 Calculator

Given Input numbers are 400, 855, 80, 811

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

Divisors of 400

List of positive integer divisors of 400 that divides 400 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400

Divisors of 855

List of positive integer divisors of 855 that divides 855 without a remainder.

1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855

Divisors of 80

List of positive integer divisors of 80 that divides 80 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Divisors of 811

List of positive integer divisors of 811 that divides 811 without a remainder.

1, 811

Greatest Common Divisior

We found the divisors of 400, 855, 80, 811 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 400, 855, 80, 811 is 1.

Therefore, GCD of numbers 400, 855, 80, 811 is 1

Given Input Data is 400, 855, 80, 811

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

Prime Factorization of 400 is 2 x 2 x 2 x 2 x 5 x 5

Prime Factorization of 855 is 3 x 3 x 5 x 19

Prime Factorization of 80 is 2 x 2 x 2 x 2 x 5

Prime Factorization of 811 is 811

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(400, 855) = 68400

GCD(400, 855) = ( 400 x 855 ) / 68400

GCD(400, 855) = 342000 / 68400

GCD(400, 855) = 5

Step2:

Here we consider the GCD from the above i.e. 5 as first number and the next as 80

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

LCM(5, 80) = 80

GCD(5, 80) = ( 5 x 80 ) / 80

GCD(5, 80) = 400 / 80

GCD(5, 80) = 5

Step3:

Here we consider the GCD from the above i.e. 5 as first number and the next as 811

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

LCM(5, 811) = 4055

GCD(5, 811) = ( 5 x 811 ) / 4055

GCD(5, 811) = 4055 / 4055

GCD(5, 811) = 1

GCD of 400, 855, 80, 811 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 852, 395, 18, 347
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• GCD of 441, 993, 11, 720
• GCD of 103, 126, 51, 533

1. What is the GCD of 400, 855, 80, 811?

GCD of 400, 855, 80, 811 is 1

2. Where do I get the detailed procedure to find GCD of 400, 855, 80, 811?

You can find a detailed procedure to find GCD of 400, 855, 80, 811 on our page.

3. How to find GCD of 400, 855, 80, 811 on a calculator?

You can find the GCD of 400, 855, 80, 811 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.