GCD of 661, 831, 77, 441 Calculator

Given Input numbers are 661, 831, 77, 441

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

Divisors of 661

List of positive integer divisors of 661 that divides 661 without a remainder.

1, 661

Divisors of 831

List of positive integer divisors of 831 that divides 831 without a remainder.

1, 3, 277, 831

Divisors of 77

List of positive integer divisors of 77 that divides 77 without a remainder.

1, 7, 11, 77

Divisors of 441

List of positive integer divisors of 441 that divides 441 without a remainder.

1, 3, 7, 9, 21, 49, 63, 147, 441

Greatest Common Divisior

We found the divisors of 661, 831, 77, 441 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 661, 831, 77, 441 is 1.

Therefore, GCD of numbers 661, 831, 77, 441 is 1

Given Input Data is 661, 831, 77, 441

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

Prime Factorization of 661 is 661

Prime Factorization of 831 is 3 x 277

Prime Factorization of 77 is 7 x 11

Prime Factorization of 441 is 3 x 3 x 7 x 7

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(661, 831) = 549291

GCD(661, 831) = ( 661 x 831 ) / 549291

GCD(661, 831) = 549291 / 549291

GCD(661, 831) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 77

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

LCM(1, 77) = 77

GCD(1, 77) = ( 1 x 77 ) / 77

GCD(1, 77) = 77 / 77

GCD(1, 77) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 441

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

LCM(1, 441) = 441

GCD(1, 441) = ( 1 x 441 ) / 441

GCD(1, 441) = 441 / 441

GCD(1, 441) = 1

GCD of 661, 831, 77, 441 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 367, 202, 47, 657
• GCD of 352, 649, 12, 925
• GCD of 349, 963, 42, 531
• GCD of 848, 469, 46, 791
• GCD of 586, 226, 16, 662

1. What is the GCD of 661, 831, 77, 441?

GCD of 661, 831, 77, 441 is 1

2. Where do I get the detailed procedure to find GCD of 661, 831, 77, 441?

You can find a detailed procedure to find GCD of 661, 831, 77, 441 on our page.

3. How to find GCD of 661, 831, 77, 441 on a calculator?

You can find the GCD of 661, 831, 77, 441 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.