GCD of 391, 327, 28, 215 Calculator

Given Input numbers are 391, 327, 28, 215

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

Divisors of 391

List of positive integer divisors of 391 that divides 391 without a remainder.

1, 17, 23, 391

Divisors of 327

List of positive integer divisors of 327 that divides 327 without a remainder.

1, 3, 109, 327

Divisors of 28

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

1, 2, 4, 7, 14, 28

Divisors of 215

List of positive integer divisors of 215 that divides 215 without a remainder.

1, 5, 43, 215

Greatest Common Divisior

We found the divisors of 391, 327, 28, 215 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 391, 327, 28, 215 is 1.

Therefore, GCD of numbers 391, 327, 28, 215 is 1

Given Input Data is 391, 327, 28, 215

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

Prime Factorization of 391 is 17 x 23

Prime Factorization of 327 is 3 x 109

Prime Factorization of 28 is 2 x 2 x 7

Prime Factorization of 215 is 5 x 43

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(391, 327) = 127857

GCD(391, 327) = ( 391 x 327 ) / 127857

GCD(391, 327) = 127857 / 127857

GCD(391, 327) = 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 215

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

LCM(1, 215) = 215

GCD(1, 215) = ( 1 x 215 ) / 215

GCD(1, 215) = 215 / 215

GCD(1, 215) = 1

GCD of 391, 327, 28, 215 is 1

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1. What is the GCD of 391, 327, 28, 215?

GCD of 391, 327, 28, 215 is 1

2. Where do I get the detailed procedure to find GCD of 391, 327, 28, 215?

You can find a detailed procedure to find GCD of 391, 327, 28, 215 on our page.

3. How to find GCD of 391, 327, 28, 215 on a calculator?

You can find the GCD of 391, 327, 28, 215 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.