GCD of 385, 640, 21, 299 Calculator

Given Input numbers are 385, 640, 21, 299

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

Divisors of 385 :

The positive integer divisors of 385 that completely divides 385 are.

1, 5, 7, 11, 35, 55, 77, 385

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 21 :

The positive integer divisors of 21 that completely divides 21 are.

1, 3, 7, 21

Divisors of 299 :

The positive integer divisors of 299 that completely divides 299 are.

1, 13, 23, 299

GCD of numbers is the greatest common divisor

So, the GCD (385, 640, 21, 299) = 1.

Given numbers are 385, 640, 21, 299

The list of prime factors of all numbers are

Prime factors of 385 are 5 x 7 x 11

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

Prime factors of 21 are 3 x 7

Prime factors of 299 are 13 x 23

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

Given numbers are 385, 640, 21, 299

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

Apply this formula for all numbers.

Step1:

LCM(385, 640) = 49280

GCD(385, 640) = ( 385 x 640 ) / 49280

= 385 / 640

= 385

Step2:

LCM(5, 21) = 105

GCD(5, 21) = ( 5 x 21 ) / 105

= 5 / 21

= 5

Step3:

LCM(1, 299) = 299

GCD(1, 299) = ( 1 x 299 ) / 299

= 1 / 299

= 1

So, Greatest Common Divisor of 385, 640, 21, 299 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 532, 722, 35, 635
• GCD of 585, 943, 76, 826
• GCD of 845, 337, 19, 726
• GCD of 884, 859, 38, 416
• GCD of 387, 709, 56, 970

Given numbers are 385, 640, 21, 299
The greatest common divisor of numbers 385, 640, 21, 299 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 385, 640, 21, 299 is 1.

1. What is the GCD of 385, 640, 21, 299?

GCD of given numbers 385, 640, 21, 299 is 1

2. How to calculate the greatest common divisor of 385, 640, 21, 299?

We can find the highest common divisor of 385, 640, 21, 299 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 385, 640, 21, 299 i.e 1.

3. How can I use the GCD of 385, 640, 21, 299Calculator?

Out the numbers 385, 640, 21, 299 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.