GCD of 399, 580, 343, 645 Calculator

Given Input numbers are 399, 580, 343, 645

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

Divisors of 399 :

The positive integer divisors of 399 that completely divides 399 are.

1, 3, 7, 19, 21, 57, 133, 399

Divisors of 580 :

The positive integer divisors of 580 that completely divides 580 are.

1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580

Divisors of 343 :

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

1, 7, 49, 343

Divisors of 645 :

The positive integer divisors of 645 that completely divides 645 are.

1, 3, 5, 15, 43, 129, 215, 645

GCD of numbers is the greatest common divisor

So, the GCD (399, 580, 343, 645) = 1.

Given numbers are 399, 580, 343, 645

The list of prime factors of all numbers are

Prime factors of 399 are 3 x 7 x 19

Prime factors of 580 are 2 x 2 x 5 x 29

Prime factors of 343 are 7 x 7 x 7

Prime factors of 645 are 3 x 5 x 43

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

Given numbers are 399, 580, 343, 645

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

Apply this formula for all numbers.

Step1:

LCM(399, 580) = 231420

GCD(399, 580) = ( 399 x 580 ) / 231420

= 399 / 580

= 399

Step2:

LCM(1, 343) = 343

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

= 1 / 343

= 1

Step3:

LCM(1, 645) = 645

GCD(1, 645) = ( 1 x 645 ) / 645

= 1 / 645

= 1

So, Greatest Common Divisor of 399, 580, 343, 645 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 726, 100, 763, 649
• GCD of 283, 812, 842, 591
• GCD of 217, 709, 221, 270
• GCD of 240, 228, 956, 728
• GCD of 441, 426, 286, 690

Given numbers are 399, 580, 343, 645
The greatest common divisor of numbers 399, 580, 343, 645 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 399, 580, 343, 645 is 1.

1. What is the GCD of 399, 580, 343, 645?

GCD of given numbers 399, 580, 343, 645 is 1

2. How to calculate the greatest common divisor of 399, 580, 343, 645?

We can find the highest common divisor of 399, 580, 343, 645 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 399, 580, 343, 645 i.e 1.

3. How can I use the GCD of 399, 580, 343, 645Calculator?

Out the numbers 399, 580, 343, 645 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.