GCD of 391, 270, 23, 651 Calculator

Given Input numbers are 391, 270, 23, 651

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 270

List of positive integer divisors of 270 that divides 270 without a remainder.

1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 270

Divisors of 23

List of positive integer divisors of 23 that divides 23 without a remainder.

1, 23

Divisors of 651

List of positive integer divisors of 651 that divides 651 without a remainder.

1, 3, 7, 21, 31, 93, 217, 651

Greatest Common Divisior

We found the divisors of 391, 270, 23, 651 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 391, 270, 23, 651 is 1.

Therefore, GCD of numbers 391, 270, 23, 651 is 1

Given Input Data is 391, 270, 23, 651

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

Prime Factorization of 391 is 17 x 23

Prime Factorization of 270 is 2 x 3 x 3 x 3 x 5

Prime Factorization of 23 is 23

Prime Factorization of 651 is 3 x 7 x 31

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, 270) = 105570

GCD(391, 270) = ( 391 x 270 ) / 105570

GCD(391, 270) = 105570 / 105570

GCD(391, 270) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 23

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

LCM(1, 23) = 23

GCD(1, 23) = ( 1 x 23 ) / 23

GCD(1, 23) = 23 / 23

GCD(1, 23) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 651

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

LCM(1, 651) = 651

GCD(1, 651) = ( 1 x 651 ) / 651

GCD(1, 651) = 651 / 651

GCD(1, 651) = 1

GCD of 391, 270, 23, 651 is 1

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1. What is the GCD of 391, 270, 23, 651?

GCD of 391, 270, 23, 651 is 1

2. Where do I get the detailed procedure to find GCD of 391, 270, 23, 651?

You can find a detailed procedure to find GCD of 391, 270, 23, 651 on our page.

3. How to find GCD of 391, 270, 23, 651 on a calculator?

You can find the GCD of 391, 270, 23, 651 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.