GCD of 16, 128, 861, 640 Calculator

Given Input numbers are 16, 128, 861, 640

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

Divisors of 16

List of positive integer divisors of 16 that divides 16 without a remainder.

1, 2, 4, 8, 16

Divisors of 128

List of positive integer divisors of 128 that divides 128 without a remainder.

1, 2, 4, 8, 16, 32, 64, 128

Divisors of 861

List of positive integer divisors of 861 that divides 861 without a remainder.

1, 3, 7, 21, 41, 123, 287, 861

Divisors of 640

List of positive integer divisors of 640 that divides 640 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640

Greatest Common Divisior

We found the divisors of 16, 128, 861, 640 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 16, 128, 861, 640 is 1.

Therefore, GCD of numbers 16, 128, 861, 640 is 1

Given Input Data is 16, 128, 861, 640

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

Prime Factorization of 16 is 2 x 2 x 2 x 2

Prime Factorization of 128 is 2 x 2 x 2 x 2 x 2 x 2 x 2

Prime Factorization of 861 is 3 x 7 x 41

Prime Factorization of 640 is 2 x 2 x 2 x 2 x 2 x 2 x 2 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(16, 128) = 128

GCD(16, 128) = ( 16 x 128 ) / 128

GCD(16, 128) = 2048 / 128

GCD(16, 128) = 16

Step2:

Here we consider the GCD from the above i.e. 16 as first number and the next as 861

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

LCM(16, 861) = 13776

GCD(16, 861) = ( 16 x 861 ) / 13776

GCD(16, 861) = 13776 / 13776

GCD(16, 861) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 640

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

LCM(1, 640) = 640

GCD(1, 640) = ( 1 x 640 ) / 640

GCD(1, 640) = 640 / 640

GCD(1, 640) = 1

GCD of 16, 128, 861, 640 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 24, 121, 489, 870
• GCD of 94, 579, 698, 951
• GCD of 62, 223, 210, 648
• GCD of 25, 475, 287, 403
• GCD of 13, 465, 527, 837

1. What is the GCD of 16, 128, 861, 640?

GCD of 16, 128, 861, 640 is 1

2. Where do I get the detailed procedure to find GCD of 16, 128, 861, 640?

You can find a detailed procedure to find GCD of 16, 128, 861, 640 on our page.

3. How to find GCD of 16, 128, 861, 640 on a calculator?

You can find the GCD of 16, 128, 861, 640 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.