GCD of 428, 391, 721, 496 Calculator

Given Input numbers are 428, 391, 721, 496

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

Divisors of 428 :

The positive integer divisors of 428 that completely divides 428 are.

1, 2, 4, 107, 214, 428

Divisors of 391 :

The positive integer divisors of 391 that completely divides 391 are.

1, 17, 23, 391

Divisors of 721 :

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

1, 7, 103, 721

Divisors of 496 :

The positive integer divisors of 496 that completely divides 496 are.

1, 2, 4, 8, 16, 31, 62, 124, 248, 496

GCD of numbers is the greatest common divisor

So, the GCD (428, 391, 721, 496) = 1.

Given numbers are 428, 391, 721, 496

The list of prime factors of all numbers are

Prime factors of 428 are 2 x 2 x 107

Prime factors of 391 are 17 x 23

Prime factors of 721 are 7 x 103

Prime factors of 496 are 2 x 2 x 2 x 2 x 31

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

Given numbers are 428, 391, 721, 496

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

Apply this formula for all numbers.

Step1:

LCM(428, 391) = 167348

GCD(428, 391) = ( 428 x 391 ) / 167348

= 428 / 391

= 428

Step2:

LCM(1, 721) = 721

GCD(1, 721) = ( 1 x 721 ) / 721

= 1 / 721

= 1

Step3:

LCM(1, 496) = 496

GCD(1, 496) = ( 1 x 496 ) / 496

= 1 / 496

= 1

So, Greatest Common Divisor of 428, 391, 721, 496 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 722, 681, 440, 990
• GCD of 684, 309, 376, 787
• GCD of 691, 647, 564, 694
• GCD of 850, 945, 632, 692
• GCD of 881, 174, 322, 641

Given numbers are 428, 391, 721, 496
The greatest common divisor of numbers 428, 391, 721, 496 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 428, 391, 721, 496 is 1.

1. What is the GCD of 428, 391, 721, 496?

GCD of given numbers 428, 391, 721, 496 is 1

2. How to calculate the greatest common divisor of 428, 391, 721, 496?

We can find the highest common divisor of 428, 391, 721, 496 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 428, 391, 721, 496 i.e 1.

3. How can I use the GCD of 428, 391, 721, 496Calculator?

Out the numbers 428, 391, 721, 496 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.