GCD of 640, 320, 129, 138 Calculator

Given Input numbers are 640, 320, 129, 138

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

Divisors of 640 :

The positive integer divisors of 640 that completely divides 640 are.

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640

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 129 :

The positive integer divisors of 129 that completely divides 129 are.

1, 3, 43, 129

Divisors of 138 :

The positive integer divisors of 138 that completely divides 138 are.

1, 2, 3, 6, 23, 46, 69, 138

GCD of numbers is the greatest common divisor

So, the GCD (640, 320, 129, 138) = 1.

Given numbers are 640, 320, 129, 138

The list of prime factors of all numbers are

Prime factors of 640 are 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5

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

Prime factors of 129 are 3 x 43

Prime factors of 138 are 2 x 3 x 23

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

Given numbers are 640, 320, 129, 138

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

Apply this formula for all numbers.

Step1:

LCM(640, 320) = 640

GCD(640, 320) = ( 640 x 320 ) / 640

= 640 / 320

= 640

Step2:

LCM(320, 129) = 41280

GCD(320, 129) = ( 320 x 129 ) / 41280

= 320 / 129

= 320

Step3:

LCM(1, 138) = 138

GCD(1, 138) = ( 1 x 138 ) / 138

= 1 / 138

= 1

So, Greatest Common Divisor of 640, 320, 129, 138 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 106, 357, 867, 465
• GCD of 706, 426, 634, 316
• GCD of 365, 466, 976, 745
• GCD of 126, 996, 654, 949
• GCD of 330, 520, 456, 331

Given numbers are 640, 320, 129, 138
The greatest common divisor of numbers 640, 320, 129, 138 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 640, 320, 129, 138 is 1.

1. What is the GCD of 640, 320, 129, 138?

GCD of given numbers 640, 320, 129, 138 is 1

2. How to calculate the greatest common divisor of 640, 320, 129, 138?

We can find the highest common divisor of 640, 320, 129, 138 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 640, 320, 129, 138 i.e 1.

3. How can I use the GCD of 640, 320, 129, 138Calculator?

Out the numbers 640, 320, 129, 138 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.