GCD of 618, 313, 665, 645 Calculator

Given Input numbers are 618, 313, 665, 645

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

Divisors of 618

List of positive integer divisors of 618 that divides 618 without a remainder.

1, 2, 3, 6, 103, 206, 309, 618

Divisors of 313

List of positive integer divisors of 313 that divides 313 without a remainder.

1, 313

Divisors of 665

List of positive integer divisors of 665 that divides 665 without a remainder.

1, 5, 7, 19, 35, 95, 133, 665

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 618, 313, 665, 645 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 618, 313, 665, 645 is 1.

Therefore, GCD of numbers 618, 313, 665, 645 is 1

Given Input Data is 618, 313, 665, 645

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

Prime Factorization of 618 is 2 x 3 x 103

Prime Factorization of 313 is 313

Prime Factorization of 665 is 5 x 7 x 19

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(618, 313) = 193434

GCD(618, 313) = ( 618 x 313 ) / 193434

GCD(618, 313) = 193434 / 193434

GCD(618, 313) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 665

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

LCM(1, 665) = 665

GCD(1, 665) = ( 1 x 665 ) / 665

GCD(1, 665) = 665 / 665

GCD(1, 665) = 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 618, 313, 665, 645 is 1

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1. What is the GCD of 618, 313, 665, 645?

GCD of 618, 313, 665, 645 is 1

2. Where do I get the detailed procedure to find GCD of 618, 313, 665, 645?

You can find a detailed procedure to find GCD of 618, 313, 665, 645 on our page.

3. How to find GCD of 618, 313, 665, 645 on a calculator?

You can find the GCD of 618, 313, 665, 645 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.