GCD of 690, 491, 660, 265 Calculator

Given Input numbers are 690, 491, 660, 265

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

Divisors of 690

List of positive integer divisors of 690 that divides 690 without a remainder.

1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690

Divisors of 491

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

1, 491

Divisors of 660

List of positive integer divisors of 660 that divides 660 without a remainder.

1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660

Divisors of 265

List of positive integer divisors of 265 that divides 265 without a remainder.

1, 5, 53, 265

Greatest Common Divisior

We found the divisors of 690, 491, 660, 265 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 690, 491, 660, 265 is 1.

Therefore, GCD of numbers 690, 491, 660, 265 is 1

Given Input Data is 690, 491, 660, 265

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

Prime Factorization of 690 is 2 x 3 x 5 x 23

Prime Factorization of 491 is 491

Prime Factorization of 660 is 2 x 2 x 3 x 5 x 11

Prime Factorization of 265 is 5 x 53

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(690, 491) = 338790

GCD(690, 491) = ( 690 x 491 ) / 338790

GCD(690, 491) = 338790 / 338790

GCD(690, 491) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 660

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

LCM(1, 660) = 660

GCD(1, 660) = ( 1 x 660 ) / 660

GCD(1, 660) = 660 / 660

GCD(1, 660) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 265

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

LCM(1, 265) = 265

GCD(1, 265) = ( 1 x 265 ) / 265

GCD(1, 265) = 265 / 265

GCD(1, 265) = 1

GCD of 690, 491, 660, 265 is 1

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1. What is the GCD of 690, 491, 660, 265?

GCD of 690, 491, 660, 265 is 1

2. Where do I get the detailed procedure to find GCD of 690, 491, 660, 265?

You can find a detailed procedure to find GCD of 690, 491, 660, 265 on our page.

3. How to find GCD of 690, 491, 660, 265 on a calculator?

You can find the GCD of 690, 491, 660, 265 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.