GCD of 991, 865, 71, 545 Calculator

Given Input numbers are 991, 865, 71, 545

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 865

List of positive integer divisors of 865 that divides 865 without a remainder.

1, 5, 173, 865

Divisors of 71

List of positive integer divisors of 71 that divides 71 without a remainder.

1, 71

Divisors of 545

List of positive integer divisors of 545 that divides 545 without a remainder.

1, 5, 109, 545

Greatest Common Divisior

We found the divisors of 991, 865, 71, 545 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 991, 865, 71, 545 is 1.

Therefore, GCD of numbers 991, 865, 71, 545 is 1

Given Input Data is 991, 865, 71, 545

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

Prime Factorization of 991 is 991

Prime Factorization of 865 is 5 x 173

Prime Factorization of 71 is 71

Prime Factorization of 545 is 5 x 109

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, 865) = 857215

GCD(991, 865) = ( 991 x 865 ) / 857215

GCD(991, 865) = 857215 / 857215

GCD(991, 865) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 71

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

LCM(1, 71) = 71

GCD(1, 71) = ( 1 x 71 ) / 71

GCD(1, 71) = 71 / 71

GCD(1, 71) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 545

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

LCM(1, 545) = 545

GCD(1, 545) = ( 1 x 545 ) / 545

GCD(1, 545) = 545 / 545

GCD(1, 545) = 1

GCD of 991, 865, 71, 545 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 616, 293, 87, 424
• GCD of 908, 305, 53, 891
• GCD of 556, 976, 50, 597
• GCD of 954, 766, 39, 947
• GCD of 191, 950, 73, 748

1. What is the GCD of 991, 865, 71, 545?

GCD of 991, 865, 71, 545 is 1

2. Where do I get the detailed procedure to find GCD of 991, 865, 71, 545?

You can find a detailed procedure to find GCD of 991, 865, 71, 545 on our page.

3. How to find GCD of 991, 865, 71, 545 on a calculator?

You can find the GCD of 991, 865, 71, 545 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.