GCD of 640, 472, 742, 645 Calculator

Given Input numbers are 640, 472, 742, 645

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

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 472 :

The positive integer divisors of 472 that completely divides 472 are.

1, 2, 4, 8, 59, 118, 236, 472

Divisors of 742 :

The positive integer divisors of 742 that completely divides 742 are.

1, 2, 7, 14, 53, 106, 371, 742

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 (640, 472, 742, 645) = 1.

Given numbers are 640, 472, 742, 645

The list of prime factors of all numbers are

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

Prime factors of 472 are 2 x 2 x 2 x 59

Prime factors of 742 are 2 x 7 x 53

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 640, 472, 742, 645

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

Apply this formula for all numbers.

Step1:

LCM(640, 472) = 37760

GCD(640, 472) = ( 640 x 472 ) / 37760

= 640 / 472

= 640

Step2:

LCM(8, 742) = 2968

GCD(8, 742) = ( 8 x 742 ) / 2968

= 8 / 742

= 8

Step3:

LCM(2, 645) = 1290

GCD(2, 645) = ( 2 x 645 ) / 1290

= 2 / 645

= 2

So, Greatest Common Divisor of 640, 472, 742, 645 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 683, 886, 155, 397
• GCD of 309, 984, 162, 494
• GCD of 823, 541, 988, 173
• GCD of 487, 945, 961, 866
• GCD of 378, 640, 125, 426

Given numbers are 640, 472, 742, 645
The greatest common divisor of numbers 640, 472, 742, 645 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 640, 472, 742, 645 is 1.

1. What is the GCD of 640, 472, 742, 645?

GCD of given numbers 640, 472, 742, 645 is 1

2. How to calculate the greatest common divisor of 640, 472, 742, 645?

We can find the highest common divisor of 640, 472, 742, 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 640, 472, 742, 645 i.e 1.

3. How can I use the GCD of 640, 472, 742, 645Calculator?

Out the numbers 640, 472, 742, 645 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.