GCD of 643, 437, 136, 398 Calculator

Given Input numbers are 643, 437, 136, 398

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

Divisors of 643 :

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

1, 643

Divisors of 437 :

The positive integer divisors of 437 that completely divides 437 are.

1, 19, 23, 437

Divisors of 136 :

The positive integer divisors of 136 that completely divides 136 are.

1, 2, 4, 8, 17, 34, 68, 136

Divisors of 398 :

The positive integer divisors of 398 that completely divides 398 are.

1, 2, 199, 398

GCD of numbers is the greatest common divisor

So, the GCD (643, 437, 136, 398) = 1.

Given numbers are 643, 437, 136, 398

The list of prime factors of all numbers are

Prime factors of 643 are 643

Prime factors of 437 are 19 x 23

Prime factors of 136 are 2 x 2 x 2 x 17

Prime factors of 398 are 2 x 199

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

Given numbers are 643, 437, 136, 398

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

Apply this formula for all numbers.

Step1:

LCM(643, 437) = 280991

GCD(643, 437) = ( 643 x 437 ) / 280991

= 643 / 437

= 643

Step2:

LCM(1, 136) = 136

GCD(1, 136) = ( 1 x 136 ) / 136

= 1 / 136

= 1

Step3:

LCM(1, 398) = 398

GCD(1, 398) = ( 1 x 398 ) / 398

= 1 / 398

= 1

So, Greatest Common Divisor of 643, 437, 136, 398 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 773, 169, 404, 997
• GCD of 725, 348, 537, 134
• GCD of 627, 111, 652, 136
• GCD of 721, 110, 370, 677
• GCD of 143, 130, 934, 639

Given numbers are 643, 437, 136, 398
The greatest common divisor of numbers 643, 437, 136, 398 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 643, 437, 136, 398 is 1.

1. What is the GCD of 643, 437, 136, 398?

GCD of given numbers 643, 437, 136, 398 is 1

2. How to calculate the greatest common divisor of 643, 437, 136, 398?

We can find the highest common divisor of 643, 437, 136, 398 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 643, 437, 136, 398 i.e 1.

3. How can I use the GCD of 643, 437, 136, 398Calculator?

Out the numbers 643, 437, 136, 398 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.