GCD of 15, 452, 620, 257 Calculator

Given Input numbers are 15, 452, 620, 257

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 452

List of positive integer divisors of 452 that divides 452 without a remainder.

1, 2, 4, 113, 226, 452

Divisors of 620

List of positive integer divisors of 620 that divides 620 without a remainder.

1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620

Divisors of 257

List of positive integer divisors of 257 that divides 257 without a remainder.

1, 257

Greatest Common Divisior

We found the divisors of 15, 452, 620, 257 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 15, 452, 620, 257 is 1.

Therefore, GCD of numbers 15, 452, 620, 257 is 1

Given Input Data is 15, 452, 620, 257

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

Prime Factorization of 15 is 3 x 5

Prime Factorization of 452 is 2 x 2 x 113

Prime Factorization of 620 is 2 x 2 x 5 x 31

Prime Factorization of 257 is 257

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(15, 452) = 6780

GCD(15, 452) = ( 15 x 452 ) / 6780

GCD(15, 452) = 6780 / 6780

GCD(15, 452) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 620

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

LCM(1, 620) = 620

GCD(1, 620) = ( 1 x 620 ) / 620

GCD(1, 620) = 620 / 620

GCD(1, 620) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 257

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

LCM(1, 257) = 257

GCD(1, 257) = ( 1 x 257 ) / 257

GCD(1, 257) = 257 / 257

GCD(1, 257) = 1

GCD of 15, 452, 620, 257 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 30, 486, 112, 789
• GCD of 47, 578, 386, 829
• GCD of 54, 775, 398, 162
• GCD of 62, 722, 813, 850
• GCD of 80, 454, 221, 249

1. What is the GCD of 15, 452, 620, 257?

GCD of 15, 452, 620, 257 is 1

2. Where do I get the detailed procedure to find GCD of 15, 452, 620, 257?

You can find a detailed procedure to find GCD of 15, 452, 620, 257 on our page.

3. How to find GCD of 15, 452, 620, 257 on a calculator?

You can find the GCD of 15, 452, 620, 257 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.