GCD of 671, 698, 780 Calculator

Given Input numbers are 671, 698, 780

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

Divisors of 671

List of positive integer divisors of 671 that divides 671 without a remainder.

1, 11, 61, 671

Divisors of 698

List of positive integer divisors of 698 that divides 698 without a remainder.

1, 2, 349, 698

Divisors of 780

List of positive integer divisors of 780 that divides 780 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780

Greatest Common Divisior

We found the divisors of 671, 698, 780 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 671, 698, 780 is 1.

Therefore, GCD of numbers 671, 698, 780 is 1

Given Input Data is 671, 698, 780

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

Prime Factorization of 671 is 11 x 61

Prime Factorization of 698 is 2 x 349

Prime Factorization of 780 is 2 x 2 x 3 x 5 x 13

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(671, 698) = 468358

GCD(671, 698) = ( 671 x 698 ) / 468358

GCD(671, 698) = 468358 / 468358

GCD(671, 698) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 780

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

LCM(1, 780) = 780

GCD(1, 780) = ( 1 x 780 ) / 780

GCD(1, 780) = 780 / 780

GCD(1, 780) = 1

GCD of 671, 698, 780 is 1

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1. What is the GCD of 671, 698, 780?

GCD of 671, 698, 780 is 1

2. Where do I get the detailed procedure to find GCD of 671, 698, 780?

You can find a detailed procedure to find GCD of 671, 698, 780 on our page.

3. How to find GCD of 671, 698, 780 on a calculator?

You can find the GCD of 671, 698, 780 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.