GCD of 21, 851, 381, 995 Calculator

Given Input numbers are 21, 851, 381, 995

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

Divisors of 21

List of positive integer divisors of 21 that divides 21 without a remainder.

1, 3, 7, 21

Divisors of 851

List of positive integer divisors of 851 that divides 851 without a remainder.

1, 23, 37, 851

Divisors of 381

List of positive integer divisors of 381 that divides 381 without a remainder.

1, 3, 127, 381

Divisors of 995

List of positive integer divisors of 995 that divides 995 without a remainder.

1, 5, 199, 995

Greatest Common Divisior

We found the divisors of 21, 851, 381, 995 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 21, 851, 381, 995 is 1.

Therefore, GCD of numbers 21, 851, 381, 995 is 1

Given Input Data is 21, 851, 381, 995

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

Prime Factorization of 21 is 3 x 7

Prime Factorization of 851 is 23 x 37

Prime Factorization of 381 is 3 x 127

Prime Factorization of 995 is 5 x 199

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(21, 851) = 17871

GCD(21, 851) = ( 21 x 851 ) / 17871

GCD(21, 851) = 17871 / 17871

GCD(21, 851) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 381

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

LCM(1, 381) = 381

GCD(1, 381) = ( 1 x 381 ) / 381

GCD(1, 381) = 381 / 381

GCD(1, 381) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 995

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

LCM(1, 995) = 995

GCD(1, 995) = ( 1 x 995 ) / 995

GCD(1, 995) = 995 / 995

GCD(1, 995) = 1

GCD of 21, 851, 381, 995 is 1

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1. What is the GCD of 21, 851, 381, 995?

GCD of 21, 851, 381, 995 is 1

2. Where do I get the detailed procedure to find GCD of 21, 851, 381, 995?

You can find a detailed procedure to find GCD of 21, 851, 381, 995 on our page.

3. How to find GCD of 21, 851, 381, 995 on a calculator?

You can find the GCD of 21, 851, 381, 995 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.