GCD of 858, 641, 18, 788 Calculator

Given Input numbers are 858, 641, 18, 788

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 641

List of positive integer divisors of 641 that divides 641 without a remainder.

1, 641

Divisors of 18

List of positive integer divisors of 18 that divides 18 without a remainder.

1, 2, 3, 6, 9, 18

Divisors of 788

List of positive integer divisors of 788 that divides 788 without a remainder.

1, 2, 4, 197, 394, 788

Greatest Common Divisior

We found the divisors of 858, 641, 18, 788 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 858, 641, 18, 788 is 1.

Therefore, GCD of numbers 858, 641, 18, 788 is 1

Given Input Data is 858, 641, 18, 788

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 641 is 641

Prime Factorization of 18 is 2 x 3 x 3

Prime Factorization of 788 is 2 x 2 x 197

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, 641) = 549978

GCD(858, 641) = ( 858 x 641 ) / 549978

GCD(858, 641) = 549978 / 549978

GCD(858, 641) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 18

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

LCM(1, 18) = 18

GCD(1, 18) = ( 1 x 18 ) / 18

GCD(1, 18) = 18 / 18

GCD(1, 18) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 788

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

LCM(1, 788) = 788

GCD(1, 788) = ( 1 x 788 ) / 788

GCD(1, 788) = 788 / 788

GCD(1, 788) = 1

GCD of 858, 641, 18, 788 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 945, 645, 88, 777
• GCD of 254, 372, 57, 445
• GCD of 964, 917, 88, 962
• GCD of 867, 859, 63, 734
• GCD of 797, 831, 61, 896

1. What is the GCD of 858, 641, 18, 788?

GCD of 858, 641, 18, 788 is 1

2. Where do I get the detailed procedure to find GCD of 858, 641, 18, 788?

You can find a detailed procedure to find GCD of 858, 641, 18, 788 on our page.

3. How to find GCD of 858, 641, 18, 788 on a calculator?

You can find the GCD of 858, 641, 18, 788 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.