GCD of 870, 477, 25, 815 Calculator

Given Input numbers are 870, 477, 25, 815

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

Divisors of 870

List of positive integer divisors of 870 that divides 870 without a remainder.

1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 145, 174, 290, 435, 870

Divisors of 477

List of positive integer divisors of 477 that divides 477 without a remainder.

1, 3, 9, 53, 159, 477

Divisors of 25

List of positive integer divisors of 25 that divides 25 without a remainder.

1, 5, 25

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 870, 477, 25, 815 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 870, 477, 25, 815 is 1.

Therefore, GCD of numbers 870, 477, 25, 815 is 1

Given Input Data is 870, 477, 25, 815

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

Prime Factorization of 870 is 2 x 3 x 5 x 29

Prime Factorization of 477 is 3 x 3 x 53

Prime Factorization of 25 is 5 x 5

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(870, 477) = 138330

GCD(870, 477) = ( 870 x 477 ) / 138330

GCD(870, 477) = 414990 / 138330

GCD(870, 477) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 25

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

LCM(3, 25) = 75

GCD(3, 25) = ( 3 x 25 ) / 75

GCD(3, 25) = 75 / 75

GCD(3, 25) = 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 870, 477, 25, 815 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 412, 998, 95, 253
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• GCD of 688, 150, 81, 433
• GCD of 914, 164, 73, 721

1. What is the GCD of 870, 477, 25, 815?

GCD of 870, 477, 25, 815 is 1

2. Where do I get the detailed procedure to find GCD of 870, 477, 25, 815?

You can find a detailed procedure to find GCD of 870, 477, 25, 815 on our page.

3. How to find GCD of 870, 477, 25, 815 on a calculator?

You can find the GCD of 870, 477, 25, 815 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.