GCD of 621, 660, 15, 621 Calculator

Given Input numbers are 621, 660, 15, 621

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

Divisors of 621

List of positive integer divisors of 621 that divides 621 without a remainder.

1, 3, 9, 23, 27, 69, 207, 621

Divisors of 660

List of positive integer divisors of 660 that divides 660 without a remainder.

1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660

Divisors of 15

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

1, 3, 5, 15

Divisors of 621

List of positive integer divisors of 621 that divides 621 without a remainder.

1, 3, 9, 23, 27, 69, 207, 621

Greatest Common Divisior

We found the divisors of 621, 660, 15, 621 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 621, 660, 15, 621 is 3.

Therefore, GCD of numbers 621, 660, 15, 621 is 3

Given Input Data is 621, 660, 15, 621

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

Prime Factorization of 621 is 3 x 3 x 3 x 23

Prime Factorization of 660 is 2 x 2 x 3 x 5 x 11

Prime Factorization of 15 is 3 x 5

Prime Factorization of 621 is 3 x 3 x 3 x 23

Highest common occurrences in the given inputs are 3¹

Multiplying them we get the GCD as 3

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(621, 660) = 136620

GCD(621, 660) = ( 621 x 660 ) / 136620

GCD(621, 660) = 409860 / 136620

GCD(621, 660) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 15

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

LCM(3, 15) = 15

GCD(3, 15) = ( 3 x 15 ) / 15

GCD(3, 15) = 45 / 15

GCD(3, 15) = 3

Step3:

Here we consider the GCD from the above i.e. 3 as first number and the next as 621

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

LCM(3, 621) = 621

GCD(3, 621) = ( 3 x 621 ) / 621

GCD(3, 621) = 1863 / 621

GCD(3, 621) = 3

GCD of 621, 660, 15, 621 is 3

Here are some samples of GCD of Numbers calculations.

• GCD of 254, 778, 51, 700
• GCD of 713, 683, 18, 631
• GCD of 880, 441, 41, 681
• GCD of 363, 459, 18, 282
• GCD of 898, 133, 23, 776

1. What is the GCD of 621, 660, 15, 621?

GCD of 621, 660, 15, 621 is 3

2. Where do I get the detailed procedure to find GCD of 621, 660, 15, 621?

You can find a detailed procedure to find GCD of 621, 660, 15, 621 on our page.

3. How to find GCD of 621, 660, 15, 621 on a calculator?

You can find the GCD of 621, 660, 15, 621 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.