GCD of 959, 871, 28, 421 Calculator

Given Input numbers are 959, 871, 28, 421

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

Divisors of 959

List of positive integer divisors of 959 that divides 959 without a remainder.

1, 7, 137, 959

Divisors of 871

List of positive integer divisors of 871 that divides 871 without a remainder.

1, 13, 67, 871

Divisors of 28

List of positive integer divisors of 28 that divides 28 without a remainder.

1, 2, 4, 7, 14, 28

Divisors of 421

List of positive integer divisors of 421 that divides 421 without a remainder.

1, 421

Greatest Common Divisior

We found the divisors of 959, 871, 28, 421 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 959, 871, 28, 421 is 1.

Therefore, GCD of numbers 959, 871, 28, 421 is 1

Given Input Data is 959, 871, 28, 421

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

Prime Factorization of 959 is 7 x 137

Prime Factorization of 871 is 13 x 67

Prime Factorization of 28 is 2 x 2 x 7

Prime Factorization of 421 is 421

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(959, 871) = 835289

GCD(959, 871) = ( 959 x 871 ) / 835289

GCD(959, 871) = 835289 / 835289

GCD(959, 871) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 28

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

LCM(1, 28) = 28

GCD(1, 28) = ( 1 x 28 ) / 28

GCD(1, 28) = 28 / 28

GCD(1, 28) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 421

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

LCM(1, 421) = 421

GCD(1, 421) = ( 1 x 421 ) / 421

GCD(1, 421) = 421 / 421

GCD(1, 421) = 1

GCD of 959, 871, 28, 421 is 1

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1. What is the GCD of 959, 871, 28, 421?

GCD of 959, 871, 28, 421 is 1

2. Where do I get the detailed procedure to find GCD of 959, 871, 28, 421?

You can find a detailed procedure to find GCD of 959, 871, 28, 421 on our page.

3. How to find GCD of 959, 871, 28, 421 on a calculator?

You can find the GCD of 959, 871, 28, 421 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.