GCD of 691, 745, 15, 491 Calculator

Given Input numbers are 691, 745, 15, 491

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

Divisors of 691

List of positive integer divisors of 691 that divides 691 without a remainder.

1, 691

Divisors of 745

List of positive integer divisors of 745 that divides 745 without a remainder.

1, 5, 149, 745

Divisors of 15

List of positive integer divisors of 15 that divides 15 without a remainder.

1, 3, 5, 15

Divisors of 491

List of positive integer divisors of 491 that divides 491 without a remainder.

1, 491

Greatest Common Divisior

We found the divisors of 691, 745, 15, 491 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 691, 745, 15, 491 is 1.

Therefore, GCD of numbers 691, 745, 15, 491 is 1

Given Input Data is 691, 745, 15, 491

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

Prime Factorization of 691 is 691

Prime Factorization of 745 is 5 x 149

Prime Factorization of 15 is 3 x 5

Prime Factorization of 491 is 491

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(691, 745) = 514795

GCD(691, 745) = ( 691 x 745 ) / 514795

GCD(691, 745) = 514795 / 514795

GCD(691, 745) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 15

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

LCM(1, 15) = 15

GCD(1, 15) = ( 1 x 15 ) / 15

GCD(1, 15) = 15 / 15

GCD(1, 15) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 491

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

LCM(1, 491) = 491

GCD(1, 491) = ( 1 x 491 ) / 491

GCD(1, 491) = 491 / 491

GCD(1, 491) = 1

GCD of 691, 745, 15, 491 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 486, 872, 19, 168
• GCD of 254, 406, 50, 574
• GCD of 746, 481, 69, 835
• GCD of 324, 702, 62, 114
• GCD of 705, 443, 19, 156

1. What is the GCD of 691, 745, 15, 491?

GCD of 691, 745, 15, 491 is 1

2. Where do I get the detailed procedure to find GCD of 691, 745, 15, 491?

You can find a detailed procedure to find GCD of 691, 745, 15, 491 on our page.

3. How to find GCD of 691, 745, 15, 491 on a calculator?

You can find the GCD of 691, 745, 15, 491 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.