GCD of 285, 669, 80, 428 Calculator

Given Input numbers are 285, 669, 80, 428

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

Divisors of 285

List of positive integer divisors of 285 that divides 285 without a remainder.

1, 3, 5, 15, 19, 57, 95, 285

Divisors of 669

List of positive integer divisors of 669 that divides 669 without a remainder.

1, 3, 223, 669

Divisors of 80

List of positive integer divisors of 80 that divides 80 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Divisors of 428

List of positive integer divisors of 428 that divides 428 without a remainder.

1, 2, 4, 107, 214, 428

Greatest Common Divisior

We found the divisors of 285, 669, 80, 428 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 285, 669, 80, 428 is 1.

Therefore, GCD of numbers 285, 669, 80, 428 is 1

Given Input Data is 285, 669, 80, 428

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

Prime Factorization of 285 is 3 x 5 x 19

Prime Factorization of 669 is 3 x 223

Prime Factorization of 80 is 2 x 2 x 2 x 2 x 5

Prime Factorization of 428 is 2 x 2 x 107

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(285, 669) = 63555

GCD(285, 669) = ( 285 x 669 ) / 63555

GCD(285, 669) = 190665 / 63555

GCD(285, 669) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 80

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

LCM(3, 80) = 240

GCD(3, 80) = ( 3 x 80 ) / 240

GCD(3, 80) = 240 / 240

GCD(3, 80) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 428

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

LCM(1, 428) = 428

GCD(1, 428) = ( 1 x 428 ) / 428

GCD(1, 428) = 428 / 428

GCD(1, 428) = 1

GCD of 285, 669, 80, 428 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 898, 583, 21, 759
• GCD of 907, 264, 62, 788
• GCD of 137, 504, 20, 602
• GCD of 932, 645, 93, 750
• GCD of 264, 509, 44, 286

1. What is the GCD of 285, 669, 80, 428?

GCD of 285, 669, 80, 428 is 1

2. Where do I get the detailed procedure to find GCD of 285, 669, 80, 428?

You can find a detailed procedure to find GCD of 285, 669, 80, 428 on our page.

3. How to find GCD of 285, 669, 80, 428 on a calculator?

You can find the GCD of 285, 669, 80, 428 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.