GCD of 168, 861, 27, 639 Calculator

Given Input numbers are 168, 861, 27, 639

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

Divisors of 168 :

The positive integer divisors of 168 that completely divides 168 are.

1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168

Divisors of 861 :

The positive integer divisors of 861 that completely divides 861 are.

1, 3, 7, 21, 41, 123, 287, 861

Divisors of 27 :

The positive integer divisors of 27 that completely divides 27 are.

1, 3, 9, 27

Divisors of 639 :

The positive integer divisors of 639 that completely divides 639 are.

1, 3, 9, 71, 213, 639

GCD of numbers is the greatest common divisor

So, the GCD (168, 861, 27, 639) = 3.

Given numbers are 168, 861, 27, 639

The list of prime factors of all numbers are

Prime factors of 168 are 2 x 2 x 2 x 3 x 7

Prime factors of 861 are 3 x 7 x 41

Prime factors of 27 are 3 x 3 x 3

Prime factors of 639 are 3 x 3 x 71

The highest common occurrence is 3¹

Therefore, GCD of 168, 861, 27, 639 is 3.

Given numbers are 168, 861, 27, 639

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

Apply this formula for all numbers.

Step1:

LCM(168, 861) = 6888

GCD(168, 861) = ( 168 x 861 ) / 6888

= 168 / 861

= 168

Step2:

LCM(21, 27) = 189

GCD(21, 27) = ( 21 x 27 ) / 189

= 21 / 27

= 21

Step3:

LCM(3, 639) = 639

GCD(3, 639) = ( 3 x 639 ) / 639

= 3 / 639

= 3

So, Greatest Common Divisor of 168, 861, 27, 639 is 3

Here are some samples of GCD of Numbers calculations.

• GCD of 101, 540, 82, 358
• GCD of 635, 122, 88, 938
• GCD of 352, 271, 25, 989
• GCD of 985, 728, 13, 368
• GCD of 354, 716, 70, 689

Given numbers are 168, 861, 27, 639
The greatest common divisor of numbers 168, 861, 27, 639 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 168, 861, 27, 639 is 3.

1. What is the GCD of 168, 861, 27, 639?

GCD of given numbers 168, 861, 27, 639 is 3

2. How to calculate the greatest common divisor of 168, 861, 27, 639?

We can find the highest common divisor of 168, 861, 27, 639 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 168, 861, 27, 639 i.e 3.

3. How can I use the GCD of 168, 861, 27, 639Calculator?

Out the numbers 168, 861, 27, 639 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.