GCD of 47, 28, 42 Calculator

Given Input numbers are 47, 28, 42

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

Divisors of 47

List of positive integer divisors of 47 that divides 47 without a remainder.

1, 47

Divisors of 28

List of positive integer divisors of 28 that divides 28 without a remainder.

1, 2, 4, 7, 14, 28

Divisors of 42

List of positive integer divisors of 42 that divides 42 without a remainder.

1, 2, 3, 6, 7, 14, 21, 42

Greatest Common Divisior

We found the divisors of 47, 28, 42 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 47, 28, 42 is 1.

Therefore, GCD of numbers 47, 28, 42 is 1

Given Input Data is 47, 28, 42

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

Prime Factorization of 47 is 47

Prime Factorization of 28 is 2 x 2 x 7

Prime Factorization of 42 is 2 x 3 x 7

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(47, 28) = 1316

GCD(47, 28) = ( 47 x 28 ) / 1316

GCD(47, 28) = 1316 / 1316

GCD(47, 28) = 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

GCD of 47, 28, 42 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 30, 13, 26
• GCD of 89, 33, 87
• GCD of 69, 60, 32
• GCD of 37, 24, 38
• GCD of 25, 51, 49

1. What is the GCD of 47, 28, 42?

GCD of 47, 28, 42 is 1

2. Where do I get the detailed procedure to find GCD of 47, 28, 42?

You can find a detailed procedure to find GCD of 47, 28, 42 on our page.

3. How to find GCD of 47, 28, 42 on a calculator?

You can find the GCD of 47, 28, 42 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.