GCD of 390, 855, 707, 309 Calculator

Given Input numbers are 390, 855, 707, 309

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

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 855 :

The positive integer divisors of 855 that completely divides 855 are.

1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855

Divisors of 707 :

The positive integer divisors of 707 that completely divides 707 are.

1, 7, 101, 707

Divisors of 309 :

The positive integer divisors of 309 that completely divides 309 are.

1, 3, 103, 309

GCD of numbers is the greatest common divisor

So, the GCD (390, 855, 707, 309) = 1.

Given numbers are 390, 855, 707, 309

The list of prime factors of all numbers are

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

Prime factors of 855 are 3 x 3 x 5 x 19

Prime factors of 707 are 7 x 101

Prime factors of 309 are 3 x 103

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

Given numbers are 390, 855, 707, 309

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

Apply this formula for all numbers.

Step1:

LCM(390, 855) = 22230

GCD(390, 855) = ( 390 x 855 ) / 22230

= 390 / 855

= 390

Step2:

LCM(15, 707) = 10605

GCD(15, 707) = ( 15 x 707 ) / 10605

= 15 / 707

= 15

Step3:

LCM(1, 309) = 309

GCD(1, 309) = ( 1 x 309 ) / 309

= 1 / 309

= 1

So, Greatest Common Divisor of 390, 855, 707, 309 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 258, 562, 316, 233
• GCD of 431, 425, 542, 202
• GCD of 808, 921, 991, 478
• GCD of 454, 562, 911, 489
• GCD of 262, 847, 596, 183

Given numbers are 390, 855, 707, 309
The greatest common divisor of numbers 390, 855, 707, 309 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 390, 855, 707, 309 is 1.

1. What is the GCD of 390, 855, 707, 309?

GCD of given numbers 390, 855, 707, 309 is 1

2. How to calculate the greatest common divisor of 390, 855, 707, 309?

We can find the highest common divisor of 390, 855, 707, 309 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 390, 855, 707, 309 i.e 1.

3. How can I use the GCD of 390, 855, 707, 309Calculator?

Out the numbers 390, 855, 707, 309 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.