GCD of 642, 320, 166, 981 Calculator

Given Input numbers are 642, 320, 166, 981

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

Divisors of 642 :

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

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

Divisors of 320 :

The positive integer divisors of 320 that completely divides 320 are.

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320

Divisors of 166 :

The positive integer divisors of 166 that completely divides 166 are.

1, 2, 83, 166

Divisors of 981 :

The positive integer divisors of 981 that completely divides 981 are.

1, 3, 9, 109, 327, 981

GCD of numbers is the greatest common divisor

So, the GCD (642, 320, 166, 981) = 1.

Given numbers are 642, 320, 166, 981

The list of prime factors of all numbers are

Prime factors of 642 are 2 x 3 x 107

Prime factors of 320 are 2 x 2 x 2 x 2 x 2 x 2 x 5

Prime factors of 166 are 2 x 83

Prime factors of 981 are 3 x 3 x 109

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

Given numbers are 642, 320, 166, 981

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

Apply this formula for all numbers.

Step1:

LCM(642, 320) = 102720

GCD(642, 320) = ( 642 x 320 ) / 102720

= 642 / 320

= 642

Step2:

LCM(2, 166) = 166

GCD(2, 166) = ( 2 x 166 ) / 166

= 2 / 166

= 2

Step3:

LCM(2, 981) = 1962

GCD(2, 981) = ( 2 x 981 ) / 1962

= 2 / 981

= 2

So, Greatest Common Divisor of 642, 320, 166, 981 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 972, 337, 502, 616
• GCD of 360, 466, 219, 214
• GCD of 331, 840, 336, 650
• GCD of 329, 360, 857, 180
• GCD of 713, 318, 643, 800

Given numbers are 642, 320, 166, 981
The greatest common divisor of numbers 642, 320, 166, 981 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 642, 320, 166, 981 is 1.

1. What is the GCD of 642, 320, 166, 981?

GCD of given numbers 642, 320, 166, 981 is 1

2. How to calculate the greatest common divisor of 642, 320, 166, 981?

We can find the highest common divisor of 642, 320, 166, 981 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 642, 320, 166, 981 i.e 1.

3. How can I use the GCD of 642, 320, 166, 981Calculator?

Out the numbers 642, 320, 166, 981 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.