GCD of 380, 455, 803, 644 Calculator

Given Input numbers are 380, 455, 803, 644

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

Divisors of 380 :

The positive integer divisors of 380 that completely divides 380 are.

1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380

Divisors of 455 :

The positive integer divisors of 455 that completely divides 455 are.

1, 5, 7, 13, 35, 65, 91, 455

Divisors of 803 :

The positive integer divisors of 803 that completely divides 803 are.

1, 11, 73, 803

Divisors of 644 :

The positive integer divisors of 644 that completely divides 644 are.

1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644

GCD of numbers is the greatest common divisor

So, the GCD (380, 455, 803, 644) = 1.

Given numbers are 380, 455, 803, 644

The list of prime factors of all numbers are

Prime factors of 380 are 2 x 2 x 5 x 19

Prime factors of 455 are 5 x 7 x 13

Prime factors of 803 are 11 x 73

Prime factors of 644 are 2 x 2 x 7 x 23

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

Given numbers are 380, 455, 803, 644

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

Apply this formula for all numbers.

Step1:

LCM(380, 455) = 34580

GCD(380, 455) = ( 380 x 455 ) / 34580

= 380 / 455

= 380

Step2:

LCM(5, 803) = 4015

GCD(5, 803) = ( 5 x 803 ) / 4015

= 5 / 803

= 5

Step3:

LCM(1, 644) = 644

GCD(1, 644) = ( 1 x 644 ) / 644

= 1 / 644

= 1

So, Greatest Common Divisor of 380, 455, 803, 644 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 899, 554, 788, 598
• GCD of 910, 546, 923, 657
• GCD of 780, 803, 687, 416
• GCD of 780, 899, 681, 265
• GCD of 817, 526, 980, 756

Given numbers are 380, 455, 803, 644
The greatest common divisor of numbers 380, 455, 803, 644 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 380, 455, 803, 644 is 1.

1. What is the GCD of 380, 455, 803, 644?

GCD of given numbers 380, 455, 803, 644 is 1

2. How to calculate the greatest common divisor of 380, 455, 803, 644?

We can find the highest common divisor of 380, 455, 803, 644 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 380, 455, 803, 644 i.e 1.

3. How can I use the GCD of 380, 455, 803, 644Calculator?

Out the numbers 380, 455, 803, 644 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.