GCD of 688, 660, 638, 397 Calculator

Given Input numbers are 688, 660, 638, 397

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 660 :

The positive integer divisors of 660 that completely divides 660 are.

1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660

Divisors of 638 :

The positive integer divisors of 638 that completely divides 638 are.

1, 2, 11, 22, 29, 58, 319, 638

Divisors of 397 :

The positive integer divisors of 397 that completely divides 397 are.

1, 397

GCD of numbers is the greatest common divisor

So, the GCD (688, 660, 638, 397) = 1.

Given numbers are 688, 660, 638, 397

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 660 are 2 x 2 x 3 x 5 x 11

Prime factors of 638 are 2 x 11 x 29

Prime factors of 397 are 397

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

Given numbers are 688, 660, 638, 397

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

Apply this formula for all numbers.

Step1:

LCM(688, 660) = 113520

GCD(688, 660) = ( 688 x 660 ) / 113520

= 688 / 660

= 688

Step2:

LCM(4, 638) = 1276

GCD(4, 638) = ( 4 x 638 ) / 1276

= 4 / 638

= 4

Step3:

LCM(2, 397) = 794

GCD(2, 397) = ( 2 x 397 ) / 794

= 2 / 397

= 2

So, Greatest Common Divisor of 688, 660, 638, 397 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 934, 438, 869, 883
• GCD of 133, 558, 821, 592
• GCD of 828, 993, 721, 823
• GCD of 737, 689, 704, 742
• GCD of 483, 252, 329, 508

Given numbers are 688, 660, 638, 397
The greatest common divisor of numbers 688, 660, 638, 397 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 688, 660, 638, 397 is 1.

1. What is the GCD of 688, 660, 638, 397?

GCD of given numbers 688, 660, 638, 397 is 1

2. How to calculate the greatest common divisor of 688, 660, 638, 397?

We can find the highest common divisor of 688, 660, 638, 397 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, 660, 638, 397 i.e 1.

3. How can I use the GCD of 688, 660, 638, 397Calculator?

Out the numbers 688, 660, 638, 397 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.