GCD of 770, 913, 447, 645 Calculator

Given Input numbers are 770, 913, 447, 645

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

Divisors of 770

List of positive integer divisors of 770 that divides 770 without a remainder.

1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770

Divisors of 913

List of positive integer divisors of 913 that divides 913 without a remainder.

1, 11, 83, 913

Divisors of 447

List of positive integer divisors of 447 that divides 447 without a remainder.

1, 3, 149, 447

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 770, 913, 447, 645 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 770, 913, 447, 645 is 1.

Therefore, GCD of numbers 770, 913, 447, 645 is 1

Given Input Data is 770, 913, 447, 645

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

Prime Factorization of 770 is 2 x 5 x 7 x 11

Prime Factorization of 913 is 11 x 83

Prime Factorization of 447 is 3 x 149

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(770, 913) = 63910

GCD(770, 913) = ( 770 x 913 ) / 63910

GCD(770, 913) = 703010 / 63910

GCD(770, 913) = 11

Step2:

Here we consider the GCD from the above i.e. 11 as first number and the next as 447

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

LCM(11, 447) = 4917

GCD(11, 447) = ( 11 x 447 ) / 4917

GCD(11, 447) = 4917 / 4917

GCD(11, 447) = 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 770, 913, 447, 645 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 132, 239, 721, 337
• GCD of 575, 280, 257, 327
• GCD of 692, 711, 113, 679
• GCD of 459, 383, 145, 988
• GCD of 654, 879, 766, 704

1. What is the GCD of 770, 913, 447, 645?

GCD of 770, 913, 447, 645 is 1

2. Where do I get the detailed procedure to find GCD of 770, 913, 447, 645?

You can find a detailed procedure to find GCD of 770, 913, 447, 645 on our page.

3. How to find GCD of 770, 913, 447, 645 on a calculator?

You can find the GCD of 770, 913, 447, 645 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.