GCD of 13, 88, 78, 91 Calculator

Given Input numbers are 13, 88, 78, 91

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

Divisors of 13

List of positive integer divisors of 13 that divides 13 without a remainder.

1, 13

Divisors of 88

List of positive integer divisors of 88 that divides 88 without a remainder.

1, 2, 4, 8, 11, 22, 44, 88

Divisors of 78

List of positive integer divisors of 78 that divides 78 without a remainder.

1, 2, 3, 6, 13, 26, 39, 78

Divisors of 91

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

1, 7, 13, 91

Greatest Common Divisior

We found the divisors of 13, 88, 78, 91 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 13, 88, 78, 91 is 1.

Therefore, GCD of numbers 13, 88, 78, 91 is 1

Given Input Data is 13, 88, 78, 91

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

Prime Factorization of 13 is 13

Prime Factorization of 88 is 2 x 2 x 2 x 11

Prime Factorization of 78 is 2 x 3 x 13

Prime Factorization of 91 is 7 x 13

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(13, 88) = 1144

GCD(13, 88) = ( 13 x 88 ) / 1144

GCD(13, 88) = 1144 / 1144

GCD(13, 88) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 78

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

LCM(1, 78) = 78

GCD(1, 78) = ( 1 x 78 ) / 78

GCD(1, 78) = 78 / 78

GCD(1, 78) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 91

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

LCM(1, 91) = 91

GCD(1, 91) = ( 1 x 91 ) / 91

GCD(1, 91) = 91 / 91

GCD(1, 91) = 1

GCD of 13, 88, 78, 91 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 91, 75, 70, 13
• GCD of 83, 61, 23, 33
• GCD of 91, 24, 30, 81
• GCD of 32, 68, 45, 39
• GCD of 95, 91, 68, 45

1. What is the GCD of 13, 88, 78, 91?

GCD of 13, 88, 78, 91 is 1

2. Where do I get the detailed procedure to find GCD of 13, 88, 78, 91?

You can find a detailed procedure to find GCD of 13, 88, 78, 91 on our page.

3. How to find GCD of 13, 88, 78, 91 on a calculator?

You can find the GCD of 13, 88, 78, 91 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.