GCD of 781, 645, 381, 427 Calculator

Given Input numbers are 781, 645, 381, 427

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

Divisors of 781 :

The positive integer divisors of 781 that completely divides 781 are.

1, 11, 71, 781

Divisors of 645 :

The positive integer divisors of 645 that completely divides 645 are.

1, 3, 5, 15, 43, 129, 215, 645

Divisors of 381 :

The positive integer divisors of 381 that completely divides 381 are.

1, 3, 127, 381

Divisors of 427 :

The positive integer divisors of 427 that completely divides 427 are.

1, 7, 61, 427

GCD of numbers is the greatest common divisor

So, the GCD (781, 645, 381, 427) = 1.

Given numbers are 781, 645, 381, 427

The list of prime factors of all numbers are

Prime factors of 781 are 11 x 71

Prime factors of 645 are 3 x 5 x 43

Prime factors of 381 are 3 x 127

Prime factors of 427 are 7 x 61

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

Given numbers are 781, 645, 381, 427

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

Apply this formula for all numbers.

Step1:

LCM(781, 645) = 503745

GCD(781, 645) = ( 781 x 645 ) / 503745

= 781 / 645

= 781

Step2:

LCM(1, 381) = 381

GCD(1, 381) = ( 1 x 381 ) / 381

= 1 / 381

= 1

Step3:

LCM(1, 427) = 427

GCD(1, 427) = ( 1 x 427 ) / 427

= 1 / 427

= 1

So, Greatest Common Divisor of 781, 645, 381, 427 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 363, 308, 396, 234
• GCD of 462, 440, 590, 442
• GCD of 643, 535, 661, 738
• GCD of 473, 939, 729, 565
• GCD of 276, 721, 605, 284

Given numbers are 781, 645, 381, 427
The greatest common divisor of numbers 781, 645, 381, 427 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 781, 645, 381, 427 is 1.

1. What is the GCD of 781, 645, 381, 427?

GCD of given numbers 781, 645, 381, 427 is 1

2. How to calculate the greatest common divisor of 781, 645, 381, 427?

We can find the highest common divisor of 781, 645, 381, 427 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 781, 645, 381, 427 i.e 1.

3. How can I use the GCD of 781, 645, 381, 427Calculator?

Out the numbers 781, 645, 381, 427 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.