GCD of 988, 285, 643, 638 Calculator

Given Input numbers are 988, 285, 643, 638

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

Divisors of 988 :

The positive integer divisors of 988 that completely divides 988 are.

1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988

Divisors of 285 :

The positive integer divisors of 285 that completely divides 285 are.

1, 3, 5, 15, 19, 57, 95, 285

Divisors of 643 :

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

1, 643

Divisors of 638 :

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

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

GCD of numbers is the greatest common divisor

So, the GCD (988, 285, 643, 638) = 1.

Given numbers are 988, 285, 643, 638

The list of prime factors of all numbers are

Prime factors of 988 are 2 x 2 x 13 x 19

Prime factors of 285 are 3 x 5 x 19

Prime factors of 643 are 643

Prime factors of 638 are 2 x 11 x 29

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

Given numbers are 988, 285, 643, 638

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

Apply this formula for all numbers.

Step1:

LCM(988, 285) = 14820

GCD(988, 285) = ( 988 x 285 ) / 14820

= 988 / 285

= 988

Step2:

LCM(19, 643) = 12217

GCD(19, 643) = ( 19 x 643 ) / 12217

= 19 / 643

= 19

Step3:

LCM(1, 638) = 638

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

= 1 / 638

= 1

So, Greatest Common Divisor of 988, 285, 643, 638 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 676, 977, 844, 717
• GCD of 494, 175, 782, 324
• GCD of 353, 401, 265, 387
• GCD of 336, 502, 618, 801
• GCD of 911, 882, 650, 272

Given numbers are 988, 285, 643, 638
The greatest common divisor of numbers 988, 285, 643, 638 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 988, 285, 643, 638 is 1.

1. What is the GCD of 988, 285, 643, 638?

GCD of given numbers 988, 285, 643, 638 is 1

2. How to calculate the greatest common divisor of 988, 285, 643, 638?

We can find the highest common divisor of 988, 285, 643, 638 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 988, 285, 643, 638 i.e 1.

3. How can I use the GCD of 988, 285, 643, 638Calculator?

Out the numbers 988, 285, 643, 638 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.