GCD of 687, 686, 643, 872 Calculator

Given Input numbers are 687, 686, 643, 872

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

Divisors of 687 :

The positive integer divisors of 687 that completely divides 687 are.

1, 3, 229, 687

Divisors of 686 :

The positive integer divisors of 686 that completely divides 686 are.

1, 2, 7, 14, 49, 98, 343, 686

Divisors of 643 :

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

1, 643

Divisors of 872 :

The positive integer divisors of 872 that completely divides 872 are.

1, 2, 4, 8, 109, 218, 436, 872

GCD of numbers is the greatest common divisor

So, the GCD (687, 686, 643, 872) = 1.

Given numbers are 687, 686, 643, 872

The list of prime factors of all numbers are

Prime factors of 687 are 3 x 229

Prime factors of 686 are 2 x 7 x 7 x 7

Prime factors of 643 are 643

Prime factors of 872 are 2 x 2 x 2 x 109

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

Given numbers are 687, 686, 643, 872

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

Apply this formula for all numbers.

Step1:

LCM(687, 686) = 471282

GCD(687, 686) = ( 687 x 686 ) / 471282

= 687 / 686

= 687

Step2:

LCM(1, 643) = 643

GCD(1, 643) = ( 1 x 643 ) / 643

= 1 / 643

= 1

Step3:

LCM(1, 872) = 872

GCD(1, 872) = ( 1 x 872 ) / 872

= 1 / 872

= 1

So, Greatest Common Divisor of 687, 686, 643, 872 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 662, 545, 834, 966
• GCD of 491, 226, 583, 984
• GCD of 881, 285, 838, 668
• GCD of 631, 636, 407, 640
• GCD of 435, 575, 235, 861

Given numbers are 687, 686, 643, 872
The greatest common divisor of numbers 687, 686, 643, 872 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 687, 686, 643, 872 is 1.

1. What is the GCD of 687, 686, 643, 872?

GCD of given numbers 687, 686, 643, 872 is 1

2. How to calculate the greatest common divisor of 687, 686, 643, 872?

We can find the highest common divisor of 687, 686, 643, 872 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 687, 686, 643, 872 i.e 1.

3. How can I use the GCD of 687, 686, 643, 872Calculator?

Out the numbers 687, 686, 643, 872 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.