GCD of 665, 339, 42, 991 Calculator

Given Input numbers are 665, 339, 42, 991

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

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 339

List of positive integer divisors of 339 that divides 339 without a remainder.

1, 3, 113, 339

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 991

List of positive integer divisors of 991 that divides 991 without a remainder.

1, 991

Greatest Common Divisior

We found the divisors of 665, 339, 42, 991 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 665, 339, 42, 991 is 1.

Therefore, GCD of numbers 665, 339, 42, 991 is 1

Given Input Data is 665, 339, 42, 991

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

Prime Factorization of 665 is 5 x 7 x 19

Prime Factorization of 339 is 3 x 113

Prime Factorization of 42 is 2 x 3 x 7

Prime Factorization of 991 is 991

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(665, 339) = 225435

GCD(665, 339) = ( 665 x 339 ) / 225435

GCD(665, 339) = 225435 / 225435

GCD(665, 339) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 42

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

LCM(1, 42) = 42

GCD(1, 42) = ( 1 x 42 ) / 42

GCD(1, 42) = 42 / 42

GCD(1, 42) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 991

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

LCM(1, 991) = 991

GCD(1, 991) = ( 1 x 991 ) / 991

GCD(1, 991) = 991 / 991

GCD(1, 991) = 1

GCD of 665, 339, 42, 991 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 600, 740, 79, 851
• GCD of 526, 386, 11, 727
• GCD of 460, 986, 55, 804
• GCD of 951, 499, 67, 322
• GCD of 339, 992, 79, 314

1. What is the GCD of 665, 339, 42, 991?

GCD of 665, 339, 42, 991 is 1

2. Where do I get the detailed procedure to find GCD of 665, 339, 42, 991?

You can find a detailed procedure to find GCD of 665, 339, 42, 991 on our page.

3. How to find GCD of 665, 339, 42, 991 on a calculator?

You can find the GCD of 665, 339, 42, 991 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.