GCD of 445, 424, 45, 643 Calculator

Given Input numbers are 445, 424, 45, 643

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

Divisors of 445

List of positive integer divisors of 445 that divides 445 without a remainder.

1, 5, 89, 445

Divisors of 424

List of positive integer divisors of 424 that divides 424 without a remainder.

1, 2, 4, 8, 53, 106, 212, 424

Divisors of 45

List of positive integer divisors of 45 that divides 45 without a remainder.

1, 3, 5, 9, 15, 45

Divisors of 643

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

1, 643

Greatest Common Divisior

We found the divisors of 445, 424, 45, 643 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 445, 424, 45, 643 is 1.

Therefore, GCD of numbers 445, 424, 45, 643 is 1

Given Input Data is 445, 424, 45, 643

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

Prime Factorization of 445 is 5 x 89

Prime Factorization of 424 is 2 x 2 x 2 x 53

Prime Factorization of 45 is 3 x 3 x 5

Prime Factorization of 643 is 643

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(445, 424) = 188680

GCD(445, 424) = ( 445 x 424 ) / 188680

GCD(445, 424) = 188680 / 188680

GCD(445, 424) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 45

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

LCM(1, 45) = 45

GCD(1, 45) = ( 1 x 45 ) / 45

GCD(1, 45) = 45 / 45

GCD(1, 45) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 643

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

LCM(1, 643) = 643

GCD(1, 643) = ( 1 x 643 ) / 643

GCD(1, 643) = 643 / 643

GCD(1, 643) = 1

GCD of 445, 424, 45, 643 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 234, 824, 42, 885
• GCD of 619, 243, 66, 408
• GCD of 633, 996, 24, 399
• GCD of 129, 692, 90, 766
• GCD of 797, 527, 92, 763

1. What is the GCD of 445, 424, 45, 643?

GCD of 445, 424, 45, 643 is 1

2. Where do I get the detailed procedure to find GCD of 445, 424, 45, 643?

You can find a detailed procedure to find GCD of 445, 424, 45, 643 on our page.

3. How to find GCD of 445, 424, 45, 643 on a calculator?

You can find the GCD of 445, 424, 45, 643 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.