GCD of 685, 643, 531, 128 Calculator

Given Input numbers are 685, 643, 531, 128

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

Divisors of 685 :

The positive integer divisors of 685 that completely divides 685 are.

1, 5, 137, 685

Divisors of 643 :

The positive integer divisors of 643 that completely divides 643 are.

1, 643

Divisors of 531 :

The positive integer divisors of 531 that completely divides 531 are.

1, 3, 9, 59, 177, 531

Divisors of 128 :

The positive integer divisors of 128 that completely divides 128 are.

1, 2, 4, 8, 16, 32, 64, 128

GCD of numbers is the greatest common divisor

So, the GCD (685, 643, 531, 128) = 1.

Given numbers are 685, 643, 531, 128

The list of prime factors of all numbers are

Prime factors of 685 are 5 x 137

Prime factors of 643 are 643

Prime factors of 531 are 3 x 3 x 59

Prime factors of 128 are 2 x 2 x 2 x 2 x 2 x 2 x 2

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

Given numbers are 685, 643, 531, 128

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

Apply this formula for all numbers.

Step1:

LCM(685, 643) = 440455

GCD(685, 643) = ( 685 x 643 ) / 440455

= 685 / 643

= 685

Step2:

LCM(1, 531) = 531

GCD(1, 531) = ( 1 x 531 ) / 531

= 1 / 531

= 1

Step3:

LCM(1, 128) = 128

GCD(1, 128) = ( 1 x 128 ) / 128

= 1 / 128

= 1

So, Greatest Common Divisor of 685, 643, 531, 128 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 645, 757, 546, 336
• GCD of 273, 551, 941, 422
• GCD of 931, 898, 350, 478
• GCD of 499, 526, 999, 816
• GCD of 875, 689, 707, 927

Given numbers are 685, 643, 531, 128
The greatest common divisor of numbers 685, 643, 531, 128 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 685, 643, 531, 128 is 1.

1. What is the GCD of 685, 643, 531, 128?

GCD of given numbers 685, 643, 531, 128 is 1

2. How to calculate the greatest common divisor of 685, 643, 531, 128?

We can find the highest common divisor of 685, 643, 531, 128 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 685, 643, 531, 128 i.e 1.

3. How can I use the GCD of 685, 643, 531, 128Calculator?

Out the numbers 685, 643, 531, 128 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.