GCD of 781, 628, 978 Calculator

Given Input numbers are 781, 628, 978

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

Divisors of 781

List of positive integer divisors of 781 that divides 781 without a remainder.

1, 11, 71, 781

Divisors of 628

List of positive integer divisors of 628 that divides 628 without a remainder.

1, 2, 4, 157, 314, 628

Divisors of 978

List of positive integer divisors of 978 that divides 978 without a remainder.

1, 2, 3, 6, 163, 326, 489, 978

Greatest Common Divisior

We found the divisors of 781, 628, 978 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 781, 628, 978 is 1.

Therefore, GCD of numbers 781, 628, 978 is 1

Given Input Data is 781, 628, 978

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

Prime Factorization of 781 is 11 x 71

Prime Factorization of 628 is 2 x 2 x 157

Prime Factorization of 978 is 2 x 3 x 163

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(781, 628) = 490468

GCD(781, 628) = ( 781 x 628 ) / 490468

GCD(781, 628) = 490468 / 490468

GCD(781, 628) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 978

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

LCM(1, 978) = 978

GCD(1, 978) = ( 1 x 978 ) / 978

GCD(1, 978) = 978 / 978

GCD(1, 978) = 1

GCD of 781, 628, 978 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 804, 431, 379
• GCD of 516, 746, 582
• GCD of 951, 195, 846
• GCD of 164, 965, 312
• GCD of 621, 754, 240

1. What is the GCD of 781, 628, 978?

GCD of 781, 628, 978 is 1

2. Where do I get the detailed procedure to find GCD of 781, 628, 978?

You can find a detailed procedure to find GCD of 781, 628, 978 on our page.

3. How to find GCD of 781, 628, 978 on a calculator?

You can find the GCD of 781, 628, 978 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.