GCD of 39, 91, 72, 43 Calculator

Given Input numbers are 39, 91, 72, 43

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

Divisors of 39

List of positive integer divisors of 39 that divides 39 without a remainder.

1, 3, 13, 39

Divisors of 91

List of positive integer divisors of 91 that divides 91 without a remainder.

1, 7, 13, 91

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 43

List of positive integer divisors of 43 that divides 43 without a remainder.

1, 43

Greatest Common Divisior

We found the divisors of 39, 91, 72, 43 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 39, 91, 72, 43 is 1.

Therefore, GCD of numbers 39, 91, 72, 43 is 1

Given Input Data is 39, 91, 72, 43

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

Prime Factorization of 39 is 3 x 13

Prime Factorization of 91 is 7 x 13

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

Prime Factorization of 43 is 43

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(39, 91) = 273

GCD(39, 91) = ( 39 x 91 ) / 273

GCD(39, 91) = 3549 / 273

GCD(39, 91) = 13

Step2:

Here we consider the GCD from the above i.e. 13 as first number and the next as 72

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

LCM(13, 72) = 936

GCD(13, 72) = ( 13 x 72 ) / 936

GCD(13, 72) = 936 / 936

GCD(13, 72) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 43

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

LCM(1, 43) = 43

GCD(1, 43) = ( 1 x 43 ) / 43

GCD(1, 43) = 43 / 43

GCD(1, 43) = 1

GCD of 39, 91, 72, 43 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 64, 51, 27, 93
• GCD of 46, 95, 15, 72
• GCD of 75, 10, 17, 93
• GCD of 41, 99, 98, 85
• GCD of 43, 87, 61, 64

1. What is the GCD of 39, 91, 72, 43?

GCD of 39, 91, 72, 43 is 1

2. Where do I get the detailed procedure to find GCD of 39, 91, 72, 43?

You can find a detailed procedure to find GCD of 39, 91, 72, 43 on our page.

3. How to find GCD of 39, 91, 72, 43 on a calculator?

You can find the GCD of 39, 91, 72, 43 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.