GCD of 25, 3, 20, 30 Calculator

Given Input numbers are 25, 3, 20, 30

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

Divisors of 25

List of positive integer divisors of 25 that divides 25 without a remainder.

1, 5, 25

Divisors of 3

List of positive integer divisors of 3 that divides 3 without a remainder.

1, 3

Divisors of 20

List of positive integer divisors of 20 that divides 20 without a remainder.

1, 2, 4, 5, 10, 20

Divisors of 30

List of positive integer divisors of 30 that divides 30 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30

Greatest Common Divisior

We found the divisors of 25, 3, 20, 30 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 25, 3, 20, 30 is 1.

Therefore, GCD of numbers 25, 3, 20, 30 is 1

Given Input Data is 25, 3, 20, 30

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

Prime Factorization of 25 is 5 x 5

Prime Factorization of 3 is 3

Prime Factorization of 20 is 2 x 2 x 5

Prime Factorization of 30 is 2 x 3 x 5

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(25, 3) = 75

GCD(25, 3) = ( 25 x 3 ) / 75

GCD(25, 3) = 75 / 75

GCD(25, 3) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 20

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

LCM(1, 20) = 20

GCD(1, 20) = ( 1 x 20 ) / 20

GCD(1, 20) = 20 / 20

GCD(1, 20) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 30

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

LCM(1, 30) = 30

GCD(1, 30) = ( 1 x 30 ) / 30

GCD(1, 30) = 30 / 30

GCD(1, 30) = 1

GCD of 25, 3, 20, 30 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 61, 9, 90, 55
• GCD of 26, 2, 56, 59
• GCD of 55, 7, 68, 45
• GCD of 61, 6, 47, 21
• GCD of 90, 9, 27, 90

1. What is the GCD of 25, 3, 20, 30?

GCD of 25, 3, 20, 30 is 1

2. Where do I get the detailed procedure to find GCD of 25, 3, 20, 30?

You can find a detailed procedure to find GCD of 25, 3, 20, 30 on our page.

3. How to find GCD of 25, 3, 20, 30 on a calculator?

You can find the GCD of 25, 3, 20, 30 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.