GCD of 15, 30, 25 Calculator

Given Input numbers are 15, 30, 25

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

Divisors of 15

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

1, 3, 5, 15

Divisors of 30

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

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

Divisors of 25

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

1, 5, 25

Greatest Common Divisior

We found the divisors of 15, 30, 25 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 15, 30, 25 is 5.

Therefore, GCD of numbers 15, 30, 25 is 5

Given Input Data is 15, 30, 25

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

Prime Factorization of 15 is 3 x 5

Prime Factorization of 30 is 2 x 3 x 5

Prime Factorization of 25 is 5 x 5

Highest common occurrences in the given inputs are 5¹

Multiplying them we get the GCD as 5

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(15, 30) = 30

GCD(15, 30) = ( 15 x 30 ) / 30

GCD(15, 30) = 450 / 30

GCD(15, 30) = 15

Step2:

Here we consider the GCD from the above i.e. 15 as first number and the next as 25

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

LCM(15, 25) = 75

GCD(15, 25) = ( 15 x 25 ) / 75

GCD(15, 25) = 375 / 75

GCD(15, 25) = 5

GCD of 15, 30, 25 is 5

Here are some samples of GCD of Numbers calculations.

• GCD of 78, 16, 34
• GCD of 77, 56, 20
• GCD of 64, 96, 99
• GCD of 88, 32, 32
• GCD of 44, 97, 47

1. What is the GCD of 15, 30, 25?

GCD of 15, 30, 25 is 5

2. Where do I get the detailed procedure to find GCD of 15, 30, 25?

You can find a detailed procedure to find GCD of 15, 30, 25 on our page.

3. How to find GCD of 15, 30, 25 on a calculator?

You can find the GCD of 15, 30, 25 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.