GCD of 721, 640, 343 Calculator

Given Input numbers are 721, 640, 343

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 640 :

The positive integer divisors of 640 that completely divides 640 are.

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640

Divisors of 343 :

The positive integer divisors of 343 that completely divides 343 are.

1, 7, 49, 343

GCD of numbers is the greatest common divisor

So, the GCD (721, 640, 343) = 1.

Given numbers are 721, 640, 343

The list of prime factors of all numbers are

Prime factors of 721 are 7 x 103

Prime factors of 640 are 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5

Prime factors of 343 are 7 x 7 x 7

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

Given numbers are 721, 640, 343

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

Apply this formula for all numbers.

Step1:

LCM(721, 640) = 461440

GCD(721, 640) = ( 721 x 640 ) / 461440

= 721 / 640

= 721

Step2:

LCM(1, 343) = 343

GCD(1, 343) = ( 1 x 343 ) / 343

= 1 / 343

= 1

So, Greatest Common Divisor of 721, 640, 343 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 548, 496, 791
• GCD of 758, 784, 123
• GCD of 512, 253, 191
• GCD of 508, 895, 856
• GCD of 634, 528, 871

Given numbers are 721, 640, 343
The greatest common divisor of numbers 721, 640, 343 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 721, 640, 343 is 1.

1. What is the GCD of 721, 640, 343?

GCD of given numbers 721, 640, 343 is 1

2. How to calculate the greatest common divisor of 721, 640, 343?

We can find the highest common divisor of 721, 640, 343 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, 640, 343 i.e 1.

3. How can I use the GCD of 721, 640, 343Calculator?

Out the numbers 721, 640, 343 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.