GCD of 643, 383, 865, 654 Calculator

Given Input numbers are 643, 383, 865, 654

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

Divisors of 643

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

1, 643

Divisors of 383

List of positive integer divisors of 383 that divides 383 without a remainder.

1, 383

Divisors of 865

List of positive integer divisors of 865 that divides 865 without a remainder.

1, 5, 173, 865

Divisors of 654

List of positive integer divisors of 654 that divides 654 without a remainder.

1, 2, 3, 6, 109, 218, 327, 654

Greatest Common Divisior

We found the divisors of 643, 383, 865, 654 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 643, 383, 865, 654 is 1.

Therefore, GCD of numbers 643, 383, 865, 654 is 1

Given Input Data is 643, 383, 865, 654

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

Prime Factorization of 643 is 643

Prime Factorization of 383 is 383

Prime Factorization of 865 is 5 x 173

Prime Factorization of 654 is 2 x 3 x 109

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(643, 383) = 246269

GCD(643, 383) = ( 643 x 383 ) / 246269

GCD(643, 383) = 246269 / 246269

GCD(643, 383) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 865

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

LCM(1, 865) = 865

GCD(1, 865) = ( 1 x 865 ) / 865

GCD(1, 865) = 865 / 865

GCD(1, 865) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 654

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

LCM(1, 654) = 654

GCD(1, 654) = ( 1 x 654 ) / 654

GCD(1, 654) = 654 / 654

GCD(1, 654) = 1

GCD of 643, 383, 865, 654 is 1

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1. What is the GCD of 643, 383, 865, 654?

GCD of 643, 383, 865, 654 is 1

2. Where do I get the detailed procedure to find GCD of 643, 383, 865, 654?

You can find a detailed procedure to find GCD of 643, 383, 865, 654 on our page.

3. How to find GCD of 643, 383, 865, 654 on a calculator?

You can find the GCD of 643, 383, 865, 654 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.