GCD of 245, 308, 405, 385 Calculator

Given Input numbers are 245, 308, 405, 385

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

Divisors of 245 :

The positive integer divisors of 245 that completely divides 245 are.

1, 5, 7, 35, 49, 245

Divisors of 308 :

The positive integer divisors of 308 that completely divides 308 are.

1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308

Divisors of 405 :

The positive integer divisors of 405 that completely divides 405 are.

1, 3, 5, 9, 15, 27, 45, 81, 135, 405

Divisors of 385 :

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

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

GCD of numbers is the greatest common divisor

So, the GCD (245, 308, 405, 385) = 1.

Given numbers are 245, 308, 405, 385

The list of prime factors of all numbers are

Prime factors of 245 are 5 x 7 x 7

Prime factors of 308 are 2 x 2 x 7 x 11

Prime factors of 405 are 3 x 3 x 3 x 3 x 5

Prime factors of 385 are 5 x 7 x 11

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

Given numbers are 245, 308, 405, 385

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

Apply this formula for all numbers.

Step1:

LCM(245, 308) = 10780

GCD(245, 308) = ( 245 x 308 ) / 10780

= 245 / 308

= 245

Step2:

LCM(7, 405) = 2835

GCD(7, 405) = ( 7 x 405 ) / 2835

= 7 / 405

= 7

Step3:

LCM(1, 385) = 385

GCD(1, 385) = ( 1 x 385 ) / 385

= 1 / 385

= 1

So, Greatest Common Divisor of 245, 308, 405, 385 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 199, 427, 977, 811
• GCD of 718, 256, 514, 702
• GCD of 530, 946, 798, 535
• GCD of 764, 222, 649, 975
• GCD of 174, 870, 787, 773

Given numbers are 245, 308, 405, 385
The greatest common divisor of numbers 245, 308, 405, 385 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 245, 308, 405, 385 is 1.

1. What is the GCD of 245, 308, 405, 385?

GCD of given numbers 245, 308, 405, 385 is 1

2. How to calculate the greatest common divisor of 245, 308, 405, 385?

We can find the highest common divisor of 245, 308, 405, 385 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 245, 308, 405, 385 i.e 1.

3. How can I use the GCD of 245, 308, 405, 385Calculator?

Out the numbers 245, 308, 405, 385 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.