GCD of 21, 995, 139, 979 Calculator

Given Input numbers are 21, 995, 139, 979

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 995

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

1, 5, 199, 995

Divisors of 139

List of positive integer divisors of 139 that divides 139 without a remainder.

1, 139

Divisors of 979

List of positive integer divisors of 979 that divides 979 without a remainder.

1, 11, 89, 979

Greatest Common Divisior

We found the divisors of 21, 995, 139, 979 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 21, 995, 139, 979 is 1.

Therefore, GCD of numbers 21, 995, 139, 979 is 1

Given Input Data is 21, 995, 139, 979

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

Prime Factorization of 21 is 3 x 7

Prime Factorization of 995 is 5 x 199

Prime Factorization of 139 is 139

Prime Factorization of 979 is 11 x 89

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, 995) = 20895

GCD(21, 995) = ( 21 x 995 ) / 20895

GCD(21, 995) = 20895 / 20895

GCD(21, 995) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 139

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

LCM(1, 139) = 139

GCD(1, 139) = ( 1 x 139 ) / 139

GCD(1, 139) = 139 / 139

GCD(1, 139) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 979

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

LCM(1, 979) = 979

GCD(1, 979) = ( 1 x 979 ) / 979

GCD(1, 979) = 979 / 979

GCD(1, 979) = 1

GCD of 21, 995, 139, 979 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 14, 120, 112, 957
• GCD of 88, 414, 190, 984
• GCD of 25, 381, 758, 543
• GCD of 88, 636, 611, 936
• GCD of 13, 411, 658, 541

1. What is the GCD of 21, 995, 139, 979?

GCD of 21, 995, 139, 979 is 1

2. Where do I get the detailed procedure to find GCD of 21, 995, 139, 979?

You can find a detailed procedure to find GCD of 21, 995, 139, 979 on our page.

3. How to find GCD of 21, 995, 139, 979 on a calculator?

You can find the GCD of 21, 995, 139, 979 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.