GCD of 621, 909, 423, 399 Calculator

Given Input numbers are 621, 909, 423, 399

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

Divisors of 621 :

The positive integer divisors of 621 that completely divides 621 are.

1, 3, 9, 23, 27, 69, 207, 621

Divisors of 909 :

The positive integer divisors of 909 that completely divides 909 are.

1, 3, 9, 101, 303, 909

Divisors of 423 :

The positive integer divisors of 423 that completely divides 423 are.

1, 3, 9, 47, 141, 423

Divisors of 399 :

The positive integer divisors of 399 that completely divides 399 are.

1, 3, 7, 19, 21, 57, 133, 399

GCD of numbers is the greatest common divisor

So, the GCD (621, 909, 423, 399) = 3.

Given numbers are 621, 909, 423, 399

The list of prime factors of all numbers are

Prime factors of 621 are 3 x 3 x 3 x 23

Prime factors of 909 are 3 x 3 x 101

Prime factors of 423 are 3 x 3 x 47

Prime factors of 399 are 3 x 7 x 19

The highest common occurrence is 3¹

Therefore, GCD of 621, 909, 423, 399 is 3.

Given numbers are 621, 909, 423, 399

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

Apply this formula for all numbers.

Step1:

LCM(621, 909) = 62721

GCD(621, 909) = ( 621 x 909 ) / 62721

= 621 / 909

= 621

Step2:

LCM(9, 423) = 423

GCD(9, 423) = ( 9 x 423 ) / 423

= 9 / 423

= 9

Step3:

LCM(9, 399) = 1197

GCD(9, 399) = ( 9 x 399 ) / 1197

= 9 / 399

= 9

So, Greatest Common Divisor of 621, 909, 423, 399 is 3

Here are some samples of GCD of Numbers calculations.

• GCD of 638, 585, 883, 319
• GCD of 107, 126, 978, 883
• GCD of 188, 566, 427, 362
• GCD of 705, 169, 233, 392
• GCD of 466, 970, 860, 273

Given numbers are 621, 909, 423, 399
The greatest common divisor of numbers 621, 909, 423, 399 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 621, 909, 423, 399 is 3.

1. What is the GCD of 621, 909, 423, 399?

GCD of given numbers 621, 909, 423, 399 is 3

2. How to calculate the greatest common divisor of 621, 909, 423, 399?

We can find the highest common divisor of 621, 909, 423, 399 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 621, 909, 423, 399 i.e 3.

3. How can I use the GCD of 621, 909, 423, 399Calculator?

Out the numbers 621, 909, 423, 399 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.