GCD of 655, 805, 45, 423 Calculator

Given Input numbers are 655, 805, 45, 423

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

Divisors of 655

List of positive integer divisors of 655 that divides 655 without a remainder.

1, 5, 131, 655

Divisors of 805

List of positive integer divisors of 805 that divides 805 without a remainder.

1, 5, 7, 23, 35, 115, 161, 805

Divisors of 45

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

1, 3, 5, 9, 15, 45

Divisors of 423

List of positive integer divisors of 423 that divides 423 without a remainder.

1, 3, 9, 47, 141, 423

Greatest Common Divisior

We found the divisors of 655, 805, 45, 423 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 655, 805, 45, 423 is 1.

Therefore, GCD of numbers 655, 805, 45, 423 is 1

Given Input Data is 655, 805, 45, 423

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

Prime Factorization of 655 is 5 x 131

Prime Factorization of 805 is 5 x 7 x 23

Prime Factorization of 45 is 3 x 3 x 5

Prime Factorization of 423 is 3 x 3 x 47

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(655, 805) = 105455

GCD(655, 805) = ( 655 x 805 ) / 105455

GCD(655, 805) = 527275 / 105455

GCD(655, 805) = 5

Step2:

Here we consider the GCD from the above i.e. 5 as first number and the next as 45

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

LCM(5, 45) = 45

GCD(5, 45) = ( 5 x 45 ) / 45

GCD(5, 45) = 225 / 45

GCD(5, 45) = 5

Step3:

Here we consider the GCD from the above i.e. 5 as first number and the next as 423

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

LCM(5, 423) = 2115

GCD(5, 423) = ( 5 x 423 ) / 2115

GCD(5, 423) = 2115 / 2115

GCD(5, 423) = 1

GCD of 655, 805, 45, 423 is 1

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1. What is the GCD of 655, 805, 45, 423?

GCD of 655, 805, 45, 423 is 1

2. Where do I get the detailed procedure to find GCD of 655, 805, 45, 423?

You can find a detailed procedure to find GCD of 655, 805, 45, 423 on our page.

3. How to find GCD of 655, 805, 45, 423 on a calculator?

You can find the GCD of 655, 805, 45, 423 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.