GCD of 389, 695, 451, 645 Calculator

Given Input numbers are 389, 695, 451, 645

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

Divisors of 389

List of positive integer divisors of 389 that divides 389 without a remainder.

1, 389

Divisors of 695

List of positive integer divisors of 695 that divides 695 without a remainder.

1, 5, 139, 695

Divisors of 451

List of positive integer divisors of 451 that divides 451 without a remainder.

1, 11, 41, 451

Divisors of 645

List of positive integer divisors of 645 that divides 645 without a remainder.

1, 3, 5, 15, 43, 129, 215, 645

Greatest Common Divisior

We found the divisors of 389, 695, 451, 645 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 389, 695, 451, 645 is 1.

Therefore, GCD of numbers 389, 695, 451, 645 is 1

Given Input Data is 389, 695, 451, 645

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

Prime Factorization of 389 is 389

Prime Factorization of 695 is 5 x 139

Prime Factorization of 451 is 11 x 41

Prime Factorization of 645 is 3 x 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(389, 695) = 270355

GCD(389, 695) = ( 389 x 695 ) / 270355

GCD(389, 695) = 270355 / 270355

GCD(389, 695) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 451

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

LCM(1, 451) = 451

GCD(1, 451) = ( 1 x 451 ) / 451

GCD(1, 451) = 451 / 451

GCD(1, 451) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 645

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

LCM(1, 645) = 645

GCD(1, 645) = ( 1 x 645 ) / 645

GCD(1, 645) = 645 / 645

GCD(1, 645) = 1

GCD of 389, 695, 451, 645 is 1

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1. What is the GCD of 389, 695, 451, 645?

GCD of 389, 695, 451, 645 is 1

2. Where do I get the detailed procedure to find GCD of 389, 695, 451, 645?

You can find a detailed procedure to find GCD of 389, 695, 451, 645 on our page.

3. How to find GCD of 389, 695, 451, 645 on a calculator?

You can find the GCD of 389, 695, 451, 645 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.