GCD of 812, 287, 456, 815 Calculator

Given Input numbers are 812, 287, 456, 815

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

Divisors of 812

List of positive integer divisors of 812 that divides 812 without a remainder.

1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 406, 812

Divisors of 287

List of positive integer divisors of 287 that divides 287 without a remainder.

1, 7, 41, 287

Divisors of 456

List of positive integer divisors of 456 that divides 456 without a remainder.

1, 2, 3, 4, 6, 8, 12, 19, 24, 38, 57, 76, 114, 152, 228, 456

Divisors of 815

List of positive integer divisors of 815 that divides 815 without a remainder.

1, 5, 163, 815

Greatest Common Divisior

We found the divisors of 812, 287, 456, 815 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 812, 287, 456, 815 is 1.

Therefore, GCD of numbers 812, 287, 456, 815 is 1

Given Input Data is 812, 287, 456, 815

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

Prime Factorization of 812 is 2 x 2 x 7 x 29

Prime Factorization of 287 is 7 x 41

Prime Factorization of 456 is 2 x 2 x 2 x 3 x 19

Prime Factorization of 815 is 5 x 163

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(812, 287) = 33292

GCD(812, 287) = ( 812 x 287 ) / 33292

GCD(812, 287) = 233044 / 33292

GCD(812, 287) = 7

Step2:

Here we consider the GCD from the above i.e. 7 as first number and the next as 456

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

LCM(7, 456) = 3192

GCD(7, 456) = ( 7 x 456 ) / 3192

GCD(7, 456) = 3192 / 3192

GCD(7, 456) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 815

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

LCM(1, 815) = 815

GCD(1, 815) = ( 1 x 815 ) / 815

GCD(1, 815) = 815 / 815

GCD(1, 815) = 1

GCD of 812, 287, 456, 815 is 1

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1. What is the GCD of 812, 287, 456, 815?

GCD of 812, 287, 456, 815 is 1

2. Where do I get the detailed procedure to find GCD of 812, 287, 456, 815?

You can find a detailed procedure to find GCD of 812, 287, 456, 815 on our page.

3. How to find GCD of 812, 287, 456, 815 on a calculator?

You can find the GCD of 812, 287, 456, 815 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.