GCD of 897, 749, 781, 643 Calculator

Given Input numbers are 897, 749, 781, 643

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

Divisors of 897

List of positive integer divisors of 897 that divides 897 without a remainder.

1, 3, 13, 23, 39, 69, 299, 897

Divisors of 749

List of positive integer divisors of 749 that divides 749 without a remainder.

1, 7, 107, 749

Divisors of 781

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

1, 11, 71, 781

Divisors of 643

List of positive integer divisors of 643 that divides 643 without a remainder.

1, 643

Greatest Common Divisior

We found the divisors of 897, 749, 781, 643 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 897, 749, 781, 643 is 1.

Therefore, GCD of numbers 897, 749, 781, 643 is 1

Given Input Data is 897, 749, 781, 643

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

Prime Factorization of 897 is 3 x 13 x 23

Prime Factorization of 749 is 7 x 107

Prime Factorization of 781 is 11 x 71

Prime Factorization of 643 is 643

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(897, 749) = 671853

GCD(897, 749) = ( 897 x 749 ) / 671853

GCD(897, 749) = 671853 / 671853

GCD(897, 749) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 781

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

LCM(1, 781) = 781

GCD(1, 781) = ( 1 x 781 ) / 781

GCD(1, 781) = 781 / 781

GCD(1, 781) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 643

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

LCM(1, 643) = 643

GCD(1, 643) = ( 1 x 643 ) / 643

GCD(1, 643) = 643 / 643

GCD(1, 643) = 1

GCD of 897, 749, 781, 643 is 1

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1. What is the GCD of 897, 749, 781, 643?

GCD of 897, 749, 781, 643 is 1

2. Where do I get the detailed procedure to find GCD of 897, 749, 781, 643?

You can find a detailed procedure to find GCD of 897, 749, 781, 643 on our page.

3. How to find GCD of 897, 749, 781, 643 on a calculator?

You can find the GCD of 897, 749, 781, 643 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.