GCD of 156, 639, 42, 218 Calculator

Given Input numbers are 156, 639, 42, 218

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

Divisors of 156 :

The positive integer divisors of 156 that completely divides 156 are.

1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156

Divisors of 639 :

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

1, 3, 9, 71, 213, 639

Divisors of 42 :

The positive integer divisors of 42 that completely divides 42 are.

1, 2, 3, 6, 7, 14, 21, 42

Divisors of 218 :

The positive integer divisors of 218 that completely divides 218 are.

1, 2, 109, 218

GCD of numbers is the greatest common divisor

So, the GCD (156, 639, 42, 218) = 1.

Given numbers are 156, 639, 42, 218

The list of prime factors of all numbers are

Prime factors of 156 are 2 x 2 x 3 x 13

Prime factors of 639 are 3 x 3 x 71

Prime factors of 42 are 2 x 3 x 7

Prime factors of 218 are 2 x 109

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

Given numbers are 156, 639, 42, 218

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

Apply this formula for all numbers.

Step1:

LCM(156, 639) = 33228

GCD(156, 639) = ( 156 x 639 ) / 33228

= 156 / 639

= 156

Step2:

LCM(3, 42) = 42

GCD(3, 42) = ( 3 x 42 ) / 42

= 3 / 42

= 3

Step3:

LCM(3, 218) = 654

GCD(3, 218) = ( 3 x 218 ) / 654

= 3 / 218

= 3

So, Greatest Common Divisor of 156, 639, 42, 218 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 635, 228, 19, 412
• GCD of 996, 492, 46, 450
• GCD of 479, 287, 86, 406
• GCD of 145, 849, 69, 351
• GCD of 598, 225, 30, 756

Given numbers are 156, 639, 42, 218
The greatest common divisor of numbers 156, 639, 42, 218 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 156, 639, 42, 218 is 1.

1. What is the GCD of 156, 639, 42, 218?

GCD of given numbers 156, 639, 42, 218 is 1

2. How to calculate the greatest common divisor of 156, 639, 42, 218?

We can find the highest common divisor of 156, 639, 42, 218 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 156, 639, 42, 218 i.e 1.

3. How can I use the GCD of 156, 639, 42, 218Calculator?

Out the numbers 156, 639, 42, 218 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.