GCD of 689, 457, 955, 643 Calculator

Given Input numbers are 689, 457, 955, 643

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

Divisors of 689

List of positive integer divisors of 689 that divides 689 without a remainder.

1, 13, 53, 689

Divisors of 457

List of positive integer divisors of 457 that divides 457 without a remainder.

1, 457

Divisors of 955

List of positive integer divisors of 955 that divides 955 without a remainder.

1, 5, 191, 955

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 689, 457, 955, 643 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 689, 457, 955, 643 is 1.

Therefore, GCD of numbers 689, 457, 955, 643 is 1

Given Input Data is 689, 457, 955, 643

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

Prime Factorization of 689 is 13 x 53

Prime Factorization of 457 is 457

Prime Factorization of 955 is 5 x 191

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(689, 457) = 314873

GCD(689, 457) = ( 689 x 457 ) / 314873

GCD(689, 457) = 314873 / 314873

GCD(689, 457) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 955

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

LCM(1, 955) = 955

GCD(1, 955) = ( 1 x 955 ) / 955

GCD(1, 955) = 955 / 955

GCD(1, 955) = 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 689, 457, 955, 643 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 831, 461, 585, 966
• GCD of 128, 975, 567, 452
• GCD of 531, 697, 775, 946
• GCD of 370, 730, 826, 381
• GCD of 907, 365, 568, 451

1. What is the GCD of 689, 457, 955, 643?

GCD of 689, 457, 955, 643 is 1

2. Where do I get the detailed procedure to find GCD of 689, 457, 955, 643?

You can find a detailed procedure to find GCD of 689, 457, 955, 643 on our page.

3. How to find GCD of 689, 457, 955, 643 on a calculator?

You can find the GCD of 689, 457, 955, 643 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.