GCD of 561, 642, 798, 662 Calculator

Given Input numbers are 561, 642, 798, 662

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

Divisors of 561

List of positive integer divisors of 561 that divides 561 without a remainder.

1, 3, 11, 17, 33, 51, 187, 561

Divisors of 642

List of positive integer divisors of 642 that divides 642 without a remainder.

1, 2, 3, 6, 107, 214, 321, 642

Divisors of 798

List of positive integer divisors of 798 that divides 798 without a remainder.

1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 266, 399, 798

Divisors of 662

List of positive integer divisors of 662 that divides 662 without a remainder.

1, 2, 331, 662

Greatest Common Divisior

We found the divisors of 561, 642, 798, 662 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 561, 642, 798, 662 is 1.

Therefore, GCD of numbers 561, 642, 798, 662 is 1

Given Input Data is 561, 642, 798, 662

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

Prime Factorization of 561 is 3 x 11 x 17

Prime Factorization of 642 is 2 x 3 x 107

Prime Factorization of 798 is 2 x 3 x 7 x 19

Prime Factorization of 662 is 2 x 331

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(561, 642) = 120054

GCD(561, 642) = ( 561 x 642 ) / 120054

GCD(561, 642) = 360162 / 120054

GCD(561, 642) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 798

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

LCM(3, 798) = 798

GCD(3, 798) = ( 3 x 798 ) / 798

GCD(3, 798) = 2394 / 798

GCD(3, 798) = 3

Step3:

Here we consider the GCD from the above i.e. 3 as first number and the next as 662

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

LCM(3, 662) = 1986

GCD(3, 662) = ( 3 x 662 ) / 1986

GCD(3, 662) = 1986 / 1986

GCD(3, 662) = 1

GCD of 561, 642, 798, 662 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 160, 149, 507, 827
• GCD of 630, 541, 685, 982
• GCD of 366, 822, 599, 513
• GCD of 828, 562, 107, 454
• GCD of 260, 605, 962, 375

1. What is the GCD of 561, 642, 798, 662?

GCD of 561, 642, 798, 662 is 1

2. Where do I get the detailed procedure to find GCD of 561, 642, 798, 662?

You can find a detailed procedure to find GCD of 561, 642, 798, 662 on our page.

3. How to find GCD of 561, 642, 798, 662 on a calculator?

You can find the GCD of 561, 642, 798, 662 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.