GCD of 661, 864, 809, 728 Calculator

Given Input numbers are 661, 864, 809, 728

In the factoring method, we have to find the divisors of all numbers

Divisors of 661 :

The positive integer divisors of 661 that completely divides 661 are.

1, 661

Divisors of 864 :

The positive integer divisors of 864 that completely divides 864 are.

1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 72, 96, 108, 144, 216, 288, 432, 864

Divisors of 809 :

The positive integer divisors of 809 that completely divides 809 are.

1, 809

Divisors of 728 :

The positive integer divisors of 728 that completely divides 728 are.

1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728

GCD of numbers is the greatest common divisor

So, the GCD (661, 864, 809, 728) = 1.

Given numbers are 661, 864, 809, 728

The list of prime factors of all numbers are

Prime factors of 661 are 661

Prime factors of 864 are 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3

Prime factors of 809 are 809

Prime factors of 728 are 2 x 2 x 2 x 7 x 13

The above numbers do not have any common prime factor. So GCD is 1

Given numbers are 661, 864, 809, 728

GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)

Apply this formula for all numbers.

Step1:

LCM(661, 864) = 571104

GCD(661, 864) = ( 661 x 864 ) / 571104

= 661 / 864

= 661

Step2:

LCM(1, 809) = 809

GCD(1, 809) = ( 1 x 809 ) / 809

= 1 / 809

= 1

Step3:

LCM(1, 728) = 728

GCD(1, 728) = ( 1 x 728 ) / 728

= 1 / 728

= 1

So, Greatest Common Divisor of 661, 864, 809, 728 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 886, 274, 847, 331
• GCD of 327, 774, 230, 901
• GCD of 143, 197, 908, 335
• GCD of 239, 879, 614, 551
• GCD of 478, 152, 427, 137

Given numbers are 661, 864, 809, 728
The greatest common divisor of numbers 661, 864, 809, 728 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 661, 864, 809, 728 is 1.

1. What is the GCD of 661, 864, 809, 728?

GCD of given numbers 661, 864, 809, 728 is 1

2. How to calculate the greatest common divisor of 661, 864, 809, 728?

We can find the highest common divisor of 661, 864, 809, 728 easily using the prime factorization method. Just list the prime factors of all numbers and pick the highest common factor which is the GCD of 661, 864, 809, 728 i.e 1.

3. How can I use the GCD of 661, 864, 809, 728Calculator?

Out the numbers 661, 864, 809, 728 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.