GCD of 165, 321, 845, 642 Calculator

Given Input numbers are 165, 321, 845, 642

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

Divisors of 165 :

The positive integer divisors of 165 that completely divides 165 are.

1, 3, 5, 11, 15, 33, 55, 165

Divisors of 321 :

The positive integer divisors of 321 that completely divides 321 are.

1, 3, 107, 321

Divisors of 845 :

The positive integer divisors of 845 that completely divides 845 are.

1, 5, 13, 65, 169, 845

Divisors of 642 :

The positive integer divisors of 642 that completely divides 642 are.

1, 2, 3, 6, 107, 214, 321, 642

GCD of numbers is the greatest common divisor

So, the GCD (165, 321, 845, 642) = 1.

Given numbers are 165, 321, 845, 642

The list of prime factors of all numbers are

Prime factors of 165 are 3 x 5 x 11

Prime factors of 321 are 3 x 107

Prime factors of 845 are 5 x 13 x 13

Prime factors of 642 are 2 x 3 x 107

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

Given numbers are 165, 321, 845, 642

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

Apply this formula for all numbers.

Step1:

LCM(165, 321) = 17655

GCD(165, 321) = ( 165 x 321 ) / 17655

= 165 / 321

= 165

Step2:

LCM(3, 845) = 2535

GCD(3, 845) = ( 3 x 845 ) / 2535

= 3 / 845

= 3

Step3:

LCM(1, 642) = 642

GCD(1, 642) = ( 1 x 642 ) / 642

= 1 / 642

= 1

So, Greatest Common Divisor of 165, 321, 845, 642 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 956, 800, 118, 164
• GCD of 281, 936, 127, 853
• GCD of 372, 407, 415, 943
• GCD of 205, 110, 462, 383
• GCD of 411, 584, 765, 286

Given numbers are 165, 321, 845, 642
The greatest common divisor of numbers 165, 321, 845, 642 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 165, 321, 845, 642 is 1.

1. What is the GCD of 165, 321, 845, 642?

GCD of given numbers 165, 321, 845, 642 is 1

2. How to calculate the greatest common divisor of 165, 321, 845, 642?

We can find the highest common divisor of 165, 321, 845, 642 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 165, 321, 845, 642 i.e 1.

3. How can I use the GCD of 165, 321, 845, 642Calculator?

Out the numbers 165, 321, 845, 642 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.