GCD of 68, 42, 87, 54 Calculator

Given Input numbers are 68, 42, 87, 54

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

Divisors of 68

List of positive integer divisors of 68 that divides 68 without a remainder.

1, 2, 4, 17, 34, 68

Divisors of 42

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

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

Divisors of 87

List of positive integer divisors of 87 that divides 87 without a remainder.

1, 3, 29, 87

Divisors of 54

List of positive integer divisors of 54 that divides 54 without a remainder.

1, 2, 3, 6, 9, 18, 27, 54

Greatest Common Divisior

We found the divisors of 68, 42, 87, 54 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 68, 42, 87, 54 is 1.

Therefore, GCD of numbers 68, 42, 87, 54 is 1

Given Input Data is 68, 42, 87, 54

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

Prime Factorization of 68 is 2 x 2 x 17

Prime Factorization of 42 is 2 x 3 x 7

Prime Factorization of 87 is 3 x 29

Prime Factorization of 54 is 2 x 3 x 3 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(68, 42) = 1428

GCD(68, 42) = ( 68 x 42 ) / 1428

GCD(68, 42) = 2856 / 1428

GCD(68, 42) = 2

Step2:

Here we consider the GCD from the above i.e. 2 as first number and the next as 87

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

LCM(2, 87) = 174

GCD(2, 87) = ( 2 x 87 ) / 174

GCD(2, 87) = 174 / 174

GCD(2, 87) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 54

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

LCM(1, 54) = 54

GCD(1, 54) = ( 1 x 54 ) / 54

GCD(1, 54) = 54 / 54

GCD(1, 54) = 1

GCD of 68, 42, 87, 54 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 45, 50, 31, 11
• GCD of 17, 73, 22, 19
• GCD of 50, 84, 66, 30
• GCD of 38, 52, 61, 89
• GCD of 12, 89, 25, 67

1. What is the GCD of 68, 42, 87, 54?

GCD of 68, 42, 87, 54 is 1

2. Where do I get the detailed procedure to find GCD of 68, 42, 87, 54?

You can find a detailed procedure to find GCD of 68, 42, 87, 54 on our page.

3. How to find GCD of 68, 42, 87, 54 on a calculator?

You can find the GCD of 68, 42, 87, 54 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.