GCD of 660, 558, 404, 821 Calculator

Given Input numbers are 660, 558, 404, 821

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

Divisors of 660 :

The positive integer divisors of 660 that completely divides 660 are.

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 558 :

The positive integer divisors of 558 that completely divides 558 are.

1, 2, 3, 6, 9, 18, 31, 62, 93, 186, 279, 558

Divisors of 404 :

The positive integer divisors of 404 that completely divides 404 are.

1, 2, 4, 101, 202, 404

Divisors of 821 :

The positive integer divisors of 821 that completely divides 821 are.

1, 821

GCD of numbers is the greatest common divisor

So, the GCD (660, 558, 404, 821) = 1.

Given numbers are 660, 558, 404, 821

The list of prime factors of all numbers are

Prime factors of 660 are 2 x 2 x 3 x 5 x 11

Prime factors of 558 are 2 x 3 x 3 x 31

Prime factors of 404 are 2 x 2 x 101

Prime factors of 821 are 821

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

Given numbers are 660, 558, 404, 821

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

Apply this formula for all numbers.

Step1:

LCM(660, 558) = 61380

GCD(660, 558) = ( 660 x 558 ) / 61380

= 660 / 558

= 660

Step2:

LCM(6, 404) = 1212

GCD(6, 404) = ( 6 x 404 ) / 1212

= 6 / 404

= 6

Step3:

LCM(2, 821) = 1642

GCD(2, 821) = ( 2 x 821 ) / 1642

= 2 / 821

= 2

So, Greatest Common Divisor of 660, 558, 404, 821 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 801, 306, 560, 988
• GCD of 275, 154, 172, 932
• GCD of 723, 999, 838, 353
• GCD of 365, 970, 220, 661
• GCD of 143, 784, 754, 970

Given numbers are 660, 558, 404, 821
The greatest common divisor of numbers 660, 558, 404, 821 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 660, 558, 404, 821 is 1.

1. What is the GCD of 660, 558, 404, 821?

GCD of given numbers 660, 558, 404, 821 is 1

2. How to calculate the greatest common divisor of 660, 558, 404, 821?

We can find the highest common divisor of 660, 558, 404, 821 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 660, 558, 404, 821 i.e 1.

3. How can I use the GCD of 660, 558, 404, 821Calculator?

Out the numbers 660, 558, 404, 821 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.