GCD of 211, 199, 390, 821 Calculator

Given Input numbers are 211, 199, 390, 821

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

Divisors of 211 :

The positive integer divisors of 211 that completely divides 211 are.

1, 211

Divisors of 199 :

The positive integer divisors of 199 that completely divides 199 are.

1, 199

Divisors of 390 :

The positive integer divisors of 390 that completely divides 390 are.

1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390

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 (211, 199, 390, 821) = 1.

Given numbers are 211, 199, 390, 821

The list of prime factors of all numbers are

Prime factors of 211 are 211

Prime factors of 199 are 199

Prime factors of 390 are 2 x 3 x 5 x 13

Prime factors of 821 are 821

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

Given numbers are 211, 199, 390, 821

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

Apply this formula for all numbers.

Step1:

LCM(211, 199) = 41989

GCD(211, 199) = ( 211 x 199 ) / 41989

= 211 / 199

= 211

Step2:

LCM(1, 390) = 390

GCD(1, 390) = ( 1 x 390 ) / 390

= 1 / 390

= 1

Step3:

LCM(1, 821) = 821

GCD(1, 821) = ( 1 x 821 ) / 821

= 1 / 821

= 1

So, Greatest Common Divisor of 211, 199, 390, 821 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 544, 911, 721, 947
• GCD of 436, 589, 315, 843
• GCD of 743, 986, 894, 669
• GCD of 745, 616, 515, 738
• GCD of 732, 223, 471, 170

Given numbers are 211, 199, 390, 821
The greatest common divisor of numbers 211, 199, 390, 821 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 211, 199, 390, 821 is 1.

1. What is the GCD of 211, 199, 390, 821?

GCD of given numbers 211, 199, 390, 821 is 1

2. How to calculate the greatest common divisor of 211, 199, 390, 821?

We can find the highest common divisor of 211, 199, 390, 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 211, 199, 390, 821 i.e 1.

3. How can I use the GCD of 211, 199, 390, 821Calculator?

Out the numbers 211, 199, 390, 821 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.