GCD of 645, 802, 68 Calculator

Given Input numbers are 645, 802, 68

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

Divisors of 645

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

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

Divisors of 802

List of positive integer divisors of 802 that divides 802 without a remainder.

1, 2, 401, 802

Divisors of 68

List of positive integer divisors of 68 that divides 68 without a remainder.

1, 2, 4, 17, 34, 68

Greatest Common Divisior

We found the divisors of 645, 802, 68 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 645, 802, 68 is 1.

Therefore, GCD of numbers 645, 802, 68 is 1

Given Input Data is 645, 802, 68

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

Prime Factorization of 645 is 3 x 5 x 43

Prime Factorization of 802 is 2 x 401

Prime Factorization of 68 is 2 x 2 x 17

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(645, 802) = 517290

GCD(645, 802) = ( 645 x 802 ) / 517290

GCD(645, 802) = 517290 / 517290

GCD(645, 802) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 68

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

LCM(1, 68) = 68

GCD(1, 68) = ( 1 x 68 ) / 68

GCD(1, 68) = 68 / 68

GCD(1, 68) = 1

GCD of 645, 802, 68 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 171, 517, 58
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• GCD of 851, 310, 79
• GCD of 457, 503, 88

1. What is the GCD of 645, 802, 68?

GCD of 645, 802, 68 is 1

2. Where do I get the detailed procedure to find GCD of 645, 802, 68?

You can find a detailed procedure to find GCD of 645, 802, 68 on our page.

3. How to find GCD of 645, 802, 68 on a calculator?

You can find the GCD of 645, 802, 68 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.