GCD of 858, 297, 761, 645 Calculator

Given Input numbers are 858, 297, 761, 645

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

Divisors of 858

List of positive integer divisors of 858 that divides 858 without a remainder.

1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 143, 286, 429, 858

Divisors of 297

List of positive integer divisors of 297 that divides 297 without a remainder.

1, 3, 9, 11, 27, 33, 99, 297

Divisors of 761

List of positive integer divisors of 761 that divides 761 without a remainder.

1, 761

Divisors of 645

List of positive integer divisors of 645 that divides 645 without a remainder.

1, 3, 5, 15, 43, 129, 215, 645

Greatest Common Divisior

We found the divisors of 858, 297, 761, 645 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 858, 297, 761, 645 is 1.

Therefore, GCD of numbers 858, 297, 761, 645 is 1

Given Input Data is 858, 297, 761, 645

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

Prime Factorization of 858 is 2 x 3 x 11 x 13

Prime Factorization of 297 is 3 x 3 x 3 x 11

Prime Factorization of 761 is 761

Prime Factorization of 645 is 3 x 5 x 43

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(858, 297) = 7722

GCD(858, 297) = ( 858 x 297 ) / 7722

GCD(858, 297) = 254826 / 7722

GCD(858, 297) = 33

Step2:

Here we consider the GCD from the above i.e. 33 as first number and the next as 761

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

LCM(33, 761) = 25113

GCD(33, 761) = ( 33 x 761 ) / 25113

GCD(33, 761) = 25113 / 25113

GCD(33, 761) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 645

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

LCM(1, 645) = 645

GCD(1, 645) = ( 1 x 645 ) / 645

GCD(1, 645) = 645 / 645

GCD(1, 645) = 1

GCD of 858, 297, 761, 645 is 1

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1. What is the GCD of 858, 297, 761, 645?

GCD of 858, 297, 761, 645 is 1

2. Where do I get the detailed procedure to find GCD of 858, 297, 761, 645?

You can find a detailed procedure to find GCD of 858, 297, 761, 645 on our page.

3. How to find GCD of 858, 297, 761, 645 on a calculator?

You can find the GCD of 858, 297, 761, 645 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.