GCD of 680, 685, 644, 904 Calculator

Given Input numbers are 680, 685, 644, 904

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

Divisors of 680 :

The positive integer divisors of 680 that completely divides 680 are.

1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680

Divisors of 685 :

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

1, 5, 137, 685

Divisors of 644 :

The positive integer divisors of 644 that completely divides 644 are.

1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644

Divisors of 904 :

The positive integer divisors of 904 that completely divides 904 are.

1, 2, 4, 8, 113, 226, 452, 904

GCD of numbers is the greatest common divisor

So, the GCD (680, 685, 644, 904) = 1.

Given numbers are 680, 685, 644, 904

The list of prime factors of all numbers are

Prime factors of 680 are 2 x 2 x 2 x 5 x 17

Prime factors of 685 are 5 x 137

Prime factors of 644 are 2 x 2 x 7 x 23

Prime factors of 904 are 2 x 2 x 2 x 113

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

Given numbers are 680, 685, 644, 904

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

Apply this formula for all numbers.

Step1:

LCM(680, 685) = 93160

GCD(680, 685) = ( 680 x 685 ) / 93160

= 680 / 685

= 680

Step2:

LCM(5, 644) = 3220

GCD(5, 644) = ( 5 x 644 ) / 3220

= 5 / 644

= 5

Step3:

LCM(1, 904) = 904

GCD(1, 904) = ( 1 x 904 ) / 904

= 1 / 904

= 1

So, Greatest Common Divisor of 680, 685, 644, 904 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 725, 283, 820, 346
• GCD of 288, 639, 497, 691
• GCD of 357, 197, 275, 784
• GCD of 454, 975, 452, 476
• GCD of 883, 948, 882, 753

Given numbers are 680, 685, 644, 904
The greatest common divisor of numbers 680, 685, 644, 904 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 680, 685, 644, 904 is 1.

1. What is the GCD of 680, 685, 644, 904?

GCD of given numbers 680, 685, 644, 904 is 1

2. How to calculate the greatest common divisor of 680, 685, 644, 904?

We can find the highest common divisor of 680, 685, 644, 904 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 680, 685, 644, 904 i.e 1.

3. How can I use the GCD of 680, 685, 644, 904Calculator?

Out the numbers 680, 685, 644, 904 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.