GCD of 102, 201, 79, 645 Calculator

Given Input numbers are 102, 201, 79, 645

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

Divisors of 102

List of positive integer divisors of 102 that divides 102 without a remainder.

1, 2, 3, 6, 17, 34, 51, 102

Divisors of 201

List of positive integer divisors of 201 that divides 201 without a remainder.

1, 3, 67, 201

Divisors of 79

List of positive integer divisors of 79 that divides 79 without a remainder.

1, 79

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 102, 201, 79, 645 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 102, 201, 79, 645 is 1.

Therefore, GCD of numbers 102, 201, 79, 645 is 1

Given Input Data is 102, 201, 79, 645

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

Prime Factorization of 102 is 2 x 3 x 17

Prime Factorization of 201 is 3 x 67

Prime Factorization of 79 is 79

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(102, 201) = 6834

GCD(102, 201) = ( 102 x 201 ) / 6834

GCD(102, 201) = 20502 / 6834

GCD(102, 201) = 3

Step2:

Here we consider the GCD from the above i.e. 3 as first number and the next as 79

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

LCM(3, 79) = 237

GCD(3, 79) = ( 3 x 79 ) / 237

GCD(3, 79) = 237 / 237

GCD(3, 79) = 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 102, 201, 79, 645 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 112, 208, 77, 240
• GCD of 750, 419, 22, 815
• GCD of 563, 557, 41, 444
• GCD of 241, 904, 34, 970
• GCD of 122, 463, 59, 665

1. What is the GCD of 102, 201, 79, 645?

GCD of 102, 201, 79, 645 is 1

2. Where do I get the detailed procedure to find GCD of 102, 201, 79, 645?

You can find a detailed procedure to find GCD of 102, 201, 79, 645 on our page.

3. How to find GCD of 102, 201, 79, 645 on a calculator?

You can find the GCD of 102, 201, 79, 645 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.