GCD of 688, 279, 845, 690 Calculator

Given Input numbers are 688, 279, 845, 690

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

Divisors of 688 :

The positive integer divisors of 688 that completely divides 688 are.

1, 2, 4, 8, 16, 43, 86, 172, 344, 688

Divisors of 279 :

The positive integer divisors of 279 that completely divides 279 are.

1, 3, 9, 31, 93, 279

Divisors of 845 :

The positive integer divisors of 845 that completely divides 845 are.

1, 5, 13, 65, 169, 845

Divisors of 690 :

The positive integer divisors of 690 that completely divides 690 are.

1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690

GCD of numbers is the greatest common divisor

So, the GCD (688, 279, 845, 690) = 1.

Given numbers are 688, 279, 845, 690

The list of prime factors of all numbers are

Prime factors of 688 are 2 x 2 x 2 x 2 x 43

Prime factors of 279 are 3 x 3 x 31

Prime factors of 845 are 5 x 13 x 13

Prime factors of 690 are 2 x 3 x 5 x 23

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

Given numbers are 688, 279, 845, 690

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

Apply this formula for all numbers.

Step1:

LCM(688, 279) = 191952

GCD(688, 279) = ( 688 x 279 ) / 191952

= 688 / 279

= 688

Step2:

LCM(1, 845) = 845

GCD(1, 845) = ( 1 x 845 ) / 845

= 1 / 845

= 1

Step3:

LCM(1, 690) = 690

GCD(1, 690) = ( 1 x 690 ) / 690

= 1 / 690

= 1

So, Greatest Common Divisor of 688, 279, 845, 690 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 632, 638, 431, 675
• GCD of 921, 736, 173, 714
• GCD of 854, 523, 473, 963
• GCD of 742, 326, 813, 860
• GCD of 216, 259, 345, 672

Given numbers are 688, 279, 845, 690
The greatest common divisor of numbers 688, 279, 845, 690 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 688, 279, 845, 690 is 1.

1. What is the GCD of 688, 279, 845, 690?

GCD of given numbers 688, 279, 845, 690 is 1

2. How to calculate the greatest common divisor of 688, 279, 845, 690?

We can find the highest common divisor of 688, 279, 845, 690 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 688, 279, 845, 690 i.e 1.

3. How can I use the GCD of 688, 279, 845, 690Calculator?

Out the numbers 688, 279, 845, 690 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.