GCD of 139, 861, 768, 409 Calculator

Given Input numbers are 139, 861, 768, 409

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

Divisors of 139

List of positive integer divisors of 139 that divides 139 without a remainder.

1, 139

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 768

List of positive integer divisors of 768 that divides 768 without a remainder.

1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 256, 384, 768

Divisors of 409

List of positive integer divisors of 409 that divides 409 without a remainder.

1, 409

Greatest Common Divisior

We found the divisors of 139, 861, 768, 409 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 139, 861, 768, 409 is 1.

Therefore, GCD of numbers 139, 861, 768, 409 is 1

Given Input Data is 139, 861, 768, 409

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

Prime Factorization of 139 is 139

Prime Factorization of 861 is 3 x 7 x 41

Prime Factorization of 768 is 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3

Prime Factorization of 409 is 409

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(139, 861) = 119679

GCD(139, 861) = ( 139 x 861 ) / 119679

GCD(139, 861) = 119679 / 119679

GCD(139, 861) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 768

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

LCM(1, 768) = 768

GCD(1, 768) = ( 1 x 768 ) / 768

GCD(1, 768) = 768 / 768

GCD(1, 768) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 409

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

LCM(1, 409) = 409

GCD(1, 409) = ( 1 x 409 ) / 409

GCD(1, 409) = 409 / 409

GCD(1, 409) = 1

GCD of 139, 861, 768, 409 is 1

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• GCD of 228, 321, 640, 293
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1. What is the GCD of 139, 861, 768, 409?

GCD of 139, 861, 768, 409 is 1

2. Where do I get the detailed procedure to find GCD of 139, 861, 768, 409?

You can find a detailed procedure to find GCD of 139, 861, 768, 409 on our page.

3. How to find GCD of 139, 861, 768, 409 on a calculator?

You can find the GCD of 139, 861, 768, 409 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.