GCD of 645, 731, 446, 158 Calculator

Given Input numbers are 645, 731, 446, 158

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

Divisors of 645

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

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

Divisors of 731

List of positive integer divisors of 731 that divides 731 without a remainder.

1, 17, 43, 731

Divisors of 446

List of positive integer divisors of 446 that divides 446 without a remainder.

1, 2, 223, 446

Divisors of 158

List of positive integer divisors of 158 that divides 158 without a remainder.

1, 2, 79, 158

Greatest Common Divisior

We found the divisors of 645, 731, 446, 158 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 645, 731, 446, 158 is 1.

Therefore, GCD of numbers 645, 731, 446, 158 is 1

Given Input Data is 645, 731, 446, 158

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

Prime Factorization of 645 is 3 x 5 x 43

Prime Factorization of 731 is 17 x 43

Prime Factorization of 446 is 2 x 223

Prime Factorization of 158 is 2 x 79

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(645, 731) = 10965

GCD(645, 731) = ( 645 x 731 ) / 10965

GCD(645, 731) = 471495 / 10965

GCD(645, 731) = 43

Step2:

Here we consider the GCD from the above i.e. 43 as first number and the next as 446

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

LCM(43, 446) = 19178

GCD(43, 446) = ( 43 x 446 ) / 19178

GCD(43, 446) = 19178 / 19178

GCD(43, 446) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 158

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

LCM(1, 158) = 158

GCD(1, 158) = ( 1 x 158 ) / 158

GCD(1, 158) = 158 / 158

GCD(1, 158) = 1

GCD of 645, 731, 446, 158 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 720, 368, 435, 514
• GCD of 586, 747, 914, 447
• GCD of 315, 314, 967, 764
• GCD of 453, 593, 804, 820
• GCD of 492, 474, 434, 884

1. What is the GCD of 645, 731, 446, 158?

GCD of 645, 731, 446, 158 is 1

2. Where do I get the detailed procedure to find GCD of 645, 731, 446, 158?

You can find a detailed procedure to find GCD of 645, 731, 446, 158 on our page.

3. How to find GCD of 645, 731, 446, 158 on a calculator?

You can find the GCD of 645, 731, 446, 158 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.