GCD of 642, 738, 124, 781 Calculator

Given Input numbers are 642, 738, 124, 781

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 738 :

The positive integer divisors of 738 that completely divides 738 are.

1, 2, 3, 6, 9, 18, 41, 82, 123, 246, 369, 738

Divisors of 124 :

The positive integer divisors of 124 that completely divides 124 are.

1, 2, 4, 31, 62, 124

Divisors of 781 :

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

1, 11, 71, 781

GCD of numbers is the greatest common divisor

So, the GCD (642, 738, 124, 781) = 1.

Given numbers are 642, 738, 124, 781

The list of prime factors of all numbers are

Prime factors of 642 are 2 x 3 x 107

Prime factors of 738 are 2 x 3 x 3 x 41

Prime factors of 124 are 2 x 2 x 31

Prime factors of 781 are 11 x 71

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

Given numbers are 642, 738, 124, 781

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

Apply this formula for all numbers.

Step1:

LCM(642, 738) = 78966

GCD(642, 738) = ( 642 x 738 ) / 78966

= 642 / 738

= 642

Step2:

LCM(6, 124) = 372

GCD(6, 124) = ( 6 x 124 ) / 372

= 6 / 124

= 6

Step3:

LCM(2, 781) = 1562

GCD(2, 781) = ( 2 x 781 ) / 1562

= 2 / 781

= 2

So, Greatest Common Divisor of 642, 738, 124, 781 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 165, 928, 304, 662
• GCD of 766, 748, 931, 944
• GCD of 302, 315, 729, 883
• GCD of 949, 896, 674, 402
• GCD of 386, 871, 376, 307

Given numbers are 642, 738, 124, 781
The greatest common divisor of numbers 642, 738, 124, 781 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 642, 738, 124, 781 is 1.

1. What is the GCD of 642, 738, 124, 781?

GCD of given numbers 642, 738, 124, 781 is 1

2. How to calculate the greatest common divisor of 642, 738, 124, 781?

We can find the highest common divisor of 642, 738, 124, 781 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, 738, 124, 781 i.e 1.

3. How can I use the GCD of 642, 738, 124, 781Calculator?

Out the numbers 642, 738, 124, 781 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.