GCD of 642, 829, 638, 691 Calculator

Given Input numbers are 642, 829, 638, 691

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

Divisors of 642 :

The positive integer divisors of 642 that completely divides 642 are.

1, 2, 3, 6, 107, 214, 321, 642

Divisors of 829 :

The positive integer divisors of 829 that completely divides 829 are.

1, 829

Divisors of 638 :

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

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

Divisors of 691 :

The positive integer divisors of 691 that completely divides 691 are.

1, 691

GCD of numbers is the greatest common divisor

So, the GCD (642, 829, 638, 691) = 1.

Given numbers are 642, 829, 638, 691

The list of prime factors of all numbers are

Prime factors of 642 are 2 x 3 x 107

Prime factors of 829 are 829

Prime factors of 638 are 2 x 11 x 29

Prime factors of 691 are 691

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

Given numbers are 642, 829, 638, 691

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

Apply this formula for all numbers.

Step1:

LCM(642, 829) = 532218

GCD(642, 829) = ( 642 x 829 ) / 532218

= 642 / 829

= 642

Step2:

LCM(1, 638) = 638

GCD(1, 638) = ( 1 x 638 ) / 638

= 1 / 638

= 1

Step3:

LCM(1, 691) = 691

GCD(1, 691) = ( 1 x 691 ) / 691

= 1 / 691

= 1

So, Greatest Common Divisor of 642, 829, 638, 691 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 563, 661, 223, 353
• GCD of 912, 293, 725, 740
• GCD of 229, 176, 322, 894
• GCD of 930, 969, 819, 332
• GCD of 535, 328, 494, 379

Given numbers are 642, 829, 638, 691
The greatest common divisor of numbers 642, 829, 638, 691 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 642, 829, 638, 691 is 1.

1. What is the GCD of 642, 829, 638, 691?

GCD of given numbers 642, 829, 638, 691 is 1

2. How to calculate the greatest common divisor of 642, 829, 638, 691?

We can find the highest common divisor of 642, 829, 638, 691 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 642, 829, 638, 691 i.e 1.

3. How can I use the GCD of 642, 829, 638, 691Calculator?

Out the numbers 642, 829, 638, 691 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.