GCD of 1, 15, 12 Calculator

Given Input numbers are 1, 15, 12

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

Divisors of 1

List of positive integer divisors of 1 that divides 1 without a remainder.

1

Divisors of 15

List of positive integer divisors of 15 that divides 15 without a remainder.

1, 3, 5, 15

Divisors of 12

List of positive integer divisors of 12 that divides 12 without a remainder.

1, 2, 3, 4, 6, 12

Greatest Common Divisior

We found the divisors of 1, 15, 12 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 1, 15, 12 is 1.

Therefore, GCD of numbers 1, 15, 12 is 1

Given Input Data is 1, 15, 12

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

Prime Factorization of 1 is

Prime Factorization of 15 is 3 x 5

Prime Factorization of 12 is 2 x 2 x 3

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(1, 15) = 15

GCD(1, 15) = ( 1 x 15 ) / 15

GCD(1, 15) = 15 / 15

GCD(1, 15) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 12

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

LCM(1, 12) = 12

GCD(1, 12) = ( 1 x 12 ) / 12

GCD(1, 12) = 12 / 12

GCD(1, 12) = 1

GCD of 1, 15, 12 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 3, 30, 43
• GCD of 7, 45, 66
• GCD of 9, 80, 33
• GCD of 1, 14, 77
• GCD of 1, 18, 84

1. What is the GCD of 1, 15, 12?

GCD of 1, 15, 12 is 1

2. Where do I get the detailed procedure to find GCD of 1, 15, 12?

You can find a detailed procedure to find GCD of 1, 15, 12 on our page.

3. How to find GCD of 1, 15, 12 on a calculator?

You can find the GCD of 1, 15, 12 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.