GCD of 991, 399, 42, 930 Calculator

Given Input numbers are 991, 399, 42, 930

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

Divisors of 991

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

1, 991

Divisors of 399

List of positive integer divisors of 399 that divides 399 without a remainder.

1, 3, 7, 19, 21, 57, 133, 399

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 930

List of positive integer divisors of 930 that divides 930 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 93, 155, 186, 310, 465, 930

Greatest Common Divisior

We found the divisors of 991, 399, 42, 930 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 991, 399, 42, 930 is 1.

Therefore, GCD of numbers 991, 399, 42, 930 is 1

Given Input Data is 991, 399, 42, 930

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

Prime Factorization of 991 is 991

Prime Factorization of 399 is 3 x 7 x 19

Prime Factorization of 42 is 2 x 3 x 7

Prime Factorization of 930 is 2 x 3 x 5 x 31

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(991, 399) = 395409

GCD(991, 399) = ( 991 x 399 ) / 395409

GCD(991, 399) = 395409 / 395409

GCD(991, 399) = 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 930

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

LCM(1, 930) = 930

GCD(1, 930) = ( 1 x 930 ) / 930

GCD(1, 930) = 930 / 930

GCD(1, 930) = 1

GCD of 991, 399, 42, 930 is 1

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1. What is the GCD of 991, 399, 42, 930?

GCD of 991, 399, 42, 930 is 1

2. Where do I get the detailed procedure to find GCD of 991, 399, 42, 930?

You can find a detailed procedure to find GCD of 991, 399, 42, 930 on our page.

3. How to find GCD of 991, 399, 42, 930 on a calculator?

You can find the GCD of 991, 399, 42, 930 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.