GCD of 721, 713, 638, 455 Calculator

Given Input numbers are 721, 713, 638, 455

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 713 :

The positive integer divisors of 713 that completely divides 713 are.

1, 23, 31, 713

Divisors of 638 :

The positive integer divisors of 638 that completely divides 638 are.

1, 2, 11, 22, 29, 58, 319, 638

Divisors of 455 :

The positive integer divisors of 455 that completely divides 455 are.

1, 5, 7, 13, 35, 65, 91, 455

GCD of numbers is the greatest common divisor

So, the GCD (721, 713, 638, 455) = 1.

Given numbers are 721, 713, 638, 455

The list of prime factors of all numbers are

Prime factors of 721 are 7 x 103

Prime factors of 713 are 23 x 31

Prime factors of 638 are 2 x 11 x 29

Prime factors of 455 are 5 x 7 x 13

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

Given numbers are 721, 713, 638, 455

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

Apply this formula for all numbers.

Step1:

LCM(721, 713) = 514073

GCD(721, 713) = ( 721 x 713 ) / 514073

= 721 / 713

= 721

Step2:

LCM(1, 638) = 638

GCD(1, 638) = ( 1 x 638 ) / 638

= 1 / 638

= 1

Step3:

LCM(1, 455) = 455

GCD(1, 455) = ( 1 x 455 ) / 455

= 1 / 455

= 1

So, Greatest Common Divisor of 721, 713, 638, 455 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 325, 185, 465, 814
• GCD of 643, 343, 696, 651
• GCD of 466, 262, 632, 387
• GCD of 943, 177, 893, 517
• GCD of 823, 116, 459, 470

Given numbers are 721, 713, 638, 455
The greatest common divisor of numbers 721, 713, 638, 455 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 721, 713, 638, 455 is 1.

1. What is the GCD of 721, 713, 638, 455?

GCD of given numbers 721, 713, 638, 455 is 1

2. How to calculate the greatest common divisor of 721, 713, 638, 455?

We can find the highest common divisor of 721, 713, 638, 455 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, 713, 638, 455 i.e 1.

3. How can I use the GCD of 721, 713, 638, 455Calculator?

Out the numbers 721, 713, 638, 455 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.