GCD of 721, 129, 781, 678 Calculator

Given Input numbers are 721, 129, 781, 678

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

Divisors of 721 :

The positive integer divisors of 721 that completely divides 721 are.

1, 7, 103, 721

Divisors of 129 :

The positive integer divisors of 129 that completely divides 129 are.

1, 3, 43, 129

Divisors of 781 :

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

1, 11, 71, 781

Divisors of 678 :

The positive integer divisors of 678 that completely divides 678 are.

1, 2, 3, 6, 113, 226, 339, 678

GCD of numbers is the greatest common divisor

So, the GCD (721, 129, 781, 678) = 1.

Given numbers are 721, 129, 781, 678

The list of prime factors of all numbers are

Prime factors of 721 are 7 x 103

Prime factors of 129 are 3 x 43

Prime factors of 781 are 11 x 71

Prime factors of 678 are 2 x 3 x 113

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

Given numbers are 721, 129, 781, 678

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

Apply this formula for all numbers.

Step1:

LCM(721, 129) = 93009

GCD(721, 129) = ( 721 x 129 ) / 93009

= 721 / 129

= 721

Step2:

LCM(1, 781) = 781

GCD(1, 781) = ( 1 x 781 ) / 781

= 1 / 781

= 1

Step3:

LCM(1, 678) = 678

GCD(1, 678) = ( 1 x 678 ) / 678

= 1 / 678

= 1

So, Greatest Common Divisor of 721, 129, 781, 678 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 499, 558, 598, 862
• GCD of 304, 921, 548, 557
• GCD of 626, 126, 971, 430
• GCD of 501, 737, 221, 887
• GCD of 569, 890, 428, 784

Given numbers are 721, 129, 781, 678
The greatest common divisor of numbers 721, 129, 781, 678 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 721, 129, 781, 678 is 1.

1. What is the GCD of 721, 129, 781, 678?

GCD of given numbers 721, 129, 781, 678 is 1

2. How to calculate the greatest common divisor of 721, 129, 781, 678?

We can find the highest common divisor of 721, 129, 781, 678 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 721, 129, 781, 678 i.e 1.

3. How can I use the GCD of 721, 129, 781, 678Calculator?

Out the numbers 721, 129, 781, 678 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.