GCD of 42, 621, 449, 555 Calculator

Given Input numbers are 42, 621, 449, 555

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

Divisors of 42

List of positive integer divisors of 42 that divides 42 without a remainder.

1, 2, 3, 6, 7, 14, 21, 42

Divisors of 621

List of positive integer divisors of 621 that divides 621 without a remainder.

1, 3, 9, 23, 27, 69, 207, 621

Divisors of 449

List of positive integer divisors of 449 that divides 449 without a remainder.

1, 449

Divisors of 555

List of positive integer divisors of 555 that divides 555 without a remainder.

1, 3, 5, 15, 37, 111, 185, 555

Greatest Common Divisior

We found the divisors of 42, 621, 449, 555 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 42, 621, 449, 555 is 1.

Therefore, GCD of numbers 42, 621, 449, 555 is 1

Given Input Data is 42, 621, 449, 555

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

Prime Factorization of 42 is 2 x 3 x 7

Prime Factorization of 621 is 3 x 3 x 3 x 23

Prime Factorization of 449 is 449

Prime Factorization of 555 is 3 x 5 x 37

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(42, 621) = 8694

GCD(42, 621) = ( 42 x 621 ) / 8694

GCD(42, 621) = 26082 / 8694

GCD(42, 621) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 449

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

LCM(3, 449) = 1347

GCD(3, 449) = ( 3 x 449 ) / 1347

GCD(3, 449) = 1347 / 1347

GCD(3, 449) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 555

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

LCM(1, 555) = 555

GCD(1, 555) = ( 1 x 555 ) / 555

GCD(1, 555) = 555 / 555

GCD(1, 555) = 1

GCD of 42, 621, 449, 555 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 15, 200, 526, 341
• GCD of 28, 345, 384, 945
• GCD of 62, 329, 858, 434
• GCD of 32, 955, 599, 469
• GCD of 52, 810, 737, 373

1. What is the GCD of 42, 621, 449, 555?

GCD of 42, 621, 449, 555 is 1

2. Where do I get the detailed procedure to find GCD of 42, 621, 449, 555?

You can find a detailed procedure to find GCD of 42, 621, 449, 555 on our page.

3. How to find GCD of 42, 621, 449, 555 on a calculator?

You can find the GCD of 42, 621, 449, 555 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.