GCD of 139, 404, 78, 721 Calculator

Given Input numbers are 139, 404, 78, 721

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 404

List of positive integer divisors of 404 that divides 404 without a remainder.

1, 2, 4, 101, 202, 404

Divisors of 78

List of positive integer divisors of 78 that divides 78 without a remainder.

1, 2, 3, 6, 13, 26, 39, 78

Divisors of 721

List of positive integer divisors of 721 that divides 721 without a remainder.

1, 7, 103, 721

Greatest Common Divisior

We found the divisors of 139, 404, 78, 721 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 139, 404, 78, 721 is 1.

Therefore, GCD of numbers 139, 404, 78, 721 is 1

Given Input Data is 139, 404, 78, 721

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

Prime Factorization of 139 is 139

Prime Factorization of 404 is 2 x 2 x 101

Prime Factorization of 78 is 2 x 3 x 13

Prime Factorization of 721 is 7 x 103

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, 404) = 56156

GCD(139, 404) = ( 139 x 404 ) / 56156

GCD(139, 404) = 56156 / 56156

GCD(139, 404) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 78

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

LCM(1, 78) = 78

GCD(1, 78) = ( 1 x 78 ) / 78

GCD(1, 78) = 78 / 78

GCD(1, 78) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 721

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

LCM(1, 721) = 721

GCD(1, 721) = ( 1 x 721 ) / 721

GCD(1, 721) = 721 / 721

GCD(1, 721) = 1

GCD of 139, 404, 78, 721 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 122, 378, 61, 550
• GCD of 289, 769, 93, 728
• GCD of 229, 876, 55, 487
• GCD of 543, 241, 29, 198
• GCD of 416, 126, 68, 443

1. What is the GCD of 139, 404, 78, 721?

GCD of 139, 404, 78, 721 is 1

2. Where do I get the detailed procedure to find GCD of 139, 404, 78, 721?

You can find a detailed procedure to find GCD of 139, 404, 78, 721 on our page.

3. How to find GCD of 139, 404, 78, 721 on a calculator?

You can find the GCD of 139, 404, 78, 721 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.