GCD of 221, 520, 12, 817 Calculator

Given Input numbers are 221, 520, 12, 817

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

Divisors of 221 :

The positive integer divisors of 221 that completely divides 221 are.

1, 13, 17, 221

Divisors of 520 :

The positive integer divisors of 520 that completely divides 520 are.

1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520

Divisors of 12 :

The positive integer divisors of 12 that completely divides 12 are.

1, 2, 3, 4, 6, 12

Divisors of 817 :

The positive integer divisors of 817 that completely divides 817 are.

1, 19, 43, 817

GCD of numbers is the greatest common divisor

So, the GCD (221, 520, 12, 817) = 1.

Given numbers are 221, 520, 12, 817

The list of prime factors of all numbers are

Prime factors of 221 are 13 x 17

Prime factors of 520 are 2 x 2 x 2 x 5 x 13

Prime factors of 12 are 2 x 2 x 3

Prime factors of 817 are 19 x 43

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

Given numbers are 221, 520, 12, 817

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

Apply this formula for all numbers.

Step1:

LCM(221, 520) = 8840

GCD(221, 520) = ( 221 x 520 ) / 8840

= 221 / 520

= 221

Step2:

LCM(13, 12) = 156

GCD(13, 12) = ( 13 x 12 ) / 156

= 13 / 12

= 13

Step3:

LCM(1, 817) = 817

GCD(1, 817) = ( 1 x 817 ) / 817

= 1 / 817

= 1

So, Greatest Common Divisor of 221, 520, 12, 817 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 691, 747, 77, 638
• GCD of 453, 258, 34, 558
• GCD of 210, 193, 58, 921
• GCD of 257, 288, 71, 152
• GCD of 537, 897, 16, 554

Given numbers are 221, 520, 12, 817
The greatest common divisor of numbers 221, 520, 12, 817 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 221, 520, 12, 817 is 1.

1. What is the GCD of 221, 520, 12, 817?

GCD of given numbers 221, 520, 12, 817 is 1

2. How to calculate the greatest common divisor of 221, 520, 12, 817?

We can find the highest common divisor of 221, 520, 12, 817 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 221, 520, 12, 817 i.e 1.

3. How can I use the GCD of 221, 520, 12, 817Calculator?

Out the numbers 221, 520, 12, 817 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.