GCD of 393, 221, 71, 128 Calculator

Given Input numbers are 393, 221, 71, 128

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

Divisors of 393 :

The positive integer divisors of 393 that completely divides 393 are.

1, 3, 131, 393

Divisors of 221 :

The positive integer divisors of 221 that completely divides 221 are.

1, 13, 17, 221

Divisors of 71 :

The positive integer divisors of 71 that completely divides 71 are.

1, 71

Divisors of 128 :

The positive integer divisors of 128 that completely divides 128 are.

1, 2, 4, 8, 16, 32, 64, 128

GCD of numbers is the greatest common divisor

So, the GCD (393, 221, 71, 128) = 1.

Given numbers are 393, 221, 71, 128

The list of prime factors of all numbers are

Prime factors of 393 are 3 x 131

Prime factors of 221 are 13 x 17

Prime factors of 71 are 71

Prime factors of 128 are 2 x 2 x 2 x 2 x 2 x 2 x 2

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

Given numbers are 393, 221, 71, 128

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

Apply this formula for all numbers.

Step1:

LCM(393, 221) = 86853

GCD(393, 221) = ( 393 x 221 ) / 86853

= 393 / 221

= 393

Step2:

LCM(1, 71) = 71

GCD(1, 71) = ( 1 x 71 ) / 71

= 1 / 71

= 1

Step3:

LCM(1, 128) = 128

GCD(1, 128) = ( 1 x 128 ) / 128

= 1 / 128

= 1

So, Greatest Common Divisor of 393, 221, 71, 128 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 875, 781, 41, 962
• GCD of 517, 793, 73, 337
• GCD of 518, 273, 24, 515
• GCD of 819, 638, 60, 108
• GCD of 647, 340, 87, 524

Given numbers are 393, 221, 71, 128
The greatest common divisor of numbers 393, 221, 71, 128 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 393, 221, 71, 128 is 1.

1. What is the GCD of 393, 221, 71, 128?

GCD of given numbers 393, 221, 71, 128 is 1

2. How to calculate the greatest common divisor of 393, 221, 71, 128?

We can find the highest common divisor of 393, 221, 71, 128 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 393, 221, 71, 128 i.e 1.

3. How can I use the GCD of 393, 221, 71, 128Calculator?

Out the numbers 393, 221, 71, 128 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.