GCD of 645, 680, 693, 521 Calculator

Given Input numbers are 645, 680, 693, 521

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

Divisors of 645 :

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

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

Divisors of 680 :

The positive integer divisors of 680 that completely divides 680 are.

1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680

Divisors of 693 :

The positive integer divisors of 693 that completely divides 693 are.

1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693

Divisors of 521 :

The positive integer divisors of 521 that completely divides 521 are.

1, 521

GCD of numbers is the greatest common divisor

So, the GCD (645, 680, 693, 521) = 1.

Given numbers are 645, 680, 693, 521

The list of prime factors of all numbers are

Prime factors of 645 are 3 x 5 x 43

Prime factors of 680 are 2 x 2 x 2 x 5 x 17

Prime factors of 693 are 3 x 3 x 7 x 11

Prime factors of 521 are 521

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

Given numbers are 645, 680, 693, 521

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

Apply this formula for all numbers.

Step1:

LCM(645, 680) = 87720

GCD(645, 680) = ( 645 x 680 ) / 87720

= 645 / 680

= 645

Step2:

LCM(5, 693) = 3465

GCD(5, 693) = ( 5 x 693 ) / 3465

= 5 / 693

= 5

Step3:

LCM(1, 521) = 521

GCD(1, 521) = ( 1 x 521 ) / 521

= 1 / 521

= 1

So, Greatest Common Divisor of 645, 680, 693, 521 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 262, 313, 816, 351
• GCD of 593, 570, 119, 822
• GCD of 485, 508, 275, 759
• GCD of 134, 452, 202, 808
• GCD of 744, 643, 560, 518

Given numbers are 645, 680, 693, 521
The greatest common divisor of numbers 645, 680, 693, 521 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 645, 680, 693, 521 is 1.

1. What is the GCD of 645, 680, 693, 521?

GCD of given numbers 645, 680, 693, 521 is 1

2. How to calculate the greatest common divisor of 645, 680, 693, 521?

We can find the highest common divisor of 645, 680, 693, 521 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 645, 680, 693, 521 i.e 1.

3. How can I use the GCD of 645, 680, 693, 521Calculator?

Out the numbers 645, 680, 693, 521 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.