GCD of 642, 643, 509 Calculator

Given Input numbers are 642, 643, 509

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

Divisors of 642

List of positive integer divisors of 642 that divides 642 without a remainder.

1, 2, 3, 6, 107, 214, 321, 642

Divisors of 643

List of positive integer divisors of 643 that divides 643 without a remainder.

1, 643

Divisors of 509

List of positive integer divisors of 509 that divides 509 without a remainder.

1, 509

Greatest Common Divisior

We found the divisors of 642, 643, 509 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 642, 643, 509 is 1.

Therefore, GCD of numbers 642, 643, 509 is 1

Given Input Data is 642, 643, 509

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

Prime Factorization of 642 is 2 x 3 x 107

Prime Factorization of 643 is 643

Prime Factorization of 509 is 509

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(642, 643) = 412806

GCD(642, 643) = ( 642 x 643 ) / 412806

GCD(642, 643) = 412806 / 412806

GCD(642, 643) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 509

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

LCM(1, 509) = 509

GCD(1, 509) = ( 1 x 509 ) / 509

GCD(1, 509) = 509 / 509

GCD(1, 509) = 1

GCD of 642, 643, 509 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 845, 405, 647
• GCD of 505, 453, 780
• GCD of 384, 224, 265
• GCD of 467, 627, 929
• GCD of 829, 198, 367

1. What is the GCD of 642, 643, 509?

GCD of 642, 643, 509 is 1

2. Where do I get the detailed procedure to find GCD of 642, 643, 509?

You can find a detailed procedure to find GCD of 642, 643, 509 on our page.

3. How to find GCD of 642, 643, 509 on a calculator?

You can find the GCD of 642, 643, 509 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.