GCD of 215, 665, 72, 447 Calculator

Given Input numbers are 215, 665, 72, 447

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

Divisors of 215

List of positive integer divisors of 215 that divides 215 without a remainder.

1, 5, 43, 215

Divisors of 665

List of positive integer divisors of 665 that divides 665 without a remainder.

1, 5, 7, 19, 35, 95, 133, 665

Divisors of 72

List of positive integer divisors of 72 that divides 72 without a remainder.

1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72

Divisors of 447

List of positive integer divisors of 447 that divides 447 without a remainder.

1, 3, 149, 447

Greatest Common Divisior

We found the divisors of 215, 665, 72, 447 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 215, 665, 72, 447 is 1.

Therefore, GCD of numbers 215, 665, 72, 447 is 1

Given Input Data is 215, 665, 72, 447

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

Prime Factorization of 215 is 5 x 43

Prime Factorization of 665 is 5 x 7 x 19

Prime Factorization of 72 is 2 x 2 x 2 x 3 x 3

Prime Factorization of 447 is 3 x 149

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(215, 665) = 28595

GCD(215, 665) = ( 215 x 665 ) / 28595

GCD(215, 665) = 142975 / 28595

GCD(215, 665) = 5

Step2:

Here we consider the GCD from the above i.e. 5 as first number and the next as 72

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

LCM(5, 72) = 360

GCD(5, 72) = ( 5 x 72 ) / 360

GCD(5, 72) = 360 / 360

GCD(5, 72) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 447

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

LCM(1, 447) = 447

GCD(1, 447) = ( 1 x 447 ) / 447

GCD(1, 447) = 447 / 447

GCD(1, 447) = 1

GCD of 215, 665, 72, 447 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 502, 571, 27, 693
• GCD of 125, 595, 18, 866
• GCD of 336, 298, 62, 926
• GCD of 346, 281, 45, 512
• GCD of 811, 345, 38, 614

1. What is the GCD of 215, 665, 72, 447?

GCD of 215, 665, 72, 447 is 1

2. Where do I get the detailed procedure to find GCD of 215, 665, 72, 447?

You can find a detailed procedure to find GCD of 215, 665, 72, 447 on our page.

3. How to find GCD of 215, 665, 72, 447 on a calculator?

You can find the GCD of 215, 665, 72, 447 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.