GCD of 780, 789, 617, 685 Calculator

Given Input numbers are 780, 789, 617, 685

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

Divisors of 780 :

The positive integer divisors of 780 that completely divides 780 are.

1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780

Divisors of 789 :

The positive integer divisors of 789 that completely divides 789 are.

1, 3, 263, 789

Divisors of 617 :

The positive integer divisors of 617 that completely divides 617 are.

1, 617

Divisors of 685 :

The positive integer divisors of 685 that completely divides 685 are.

1, 5, 137, 685

GCD of numbers is the greatest common divisor

So, the GCD (780, 789, 617, 685) = 1.

Given numbers are 780, 789, 617, 685

The list of prime factors of all numbers are

Prime factors of 780 are 2 x 2 x 3 x 5 x 13

Prime factors of 789 are 3 x 263

Prime factors of 617 are 617

Prime factors of 685 are 5 x 137

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

Given numbers are 780, 789, 617, 685

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

Apply this formula for all numbers.

Step1:

LCM(780, 789) = 205140

GCD(780, 789) = ( 780 x 789 ) / 205140

= 780 / 789

= 780

Step2:

LCM(3, 617) = 1851

GCD(3, 617) = ( 3 x 617 ) / 1851

= 3 / 617

= 3

Step3:

LCM(1, 685) = 685

GCD(1, 685) = ( 1 x 685 ) / 685

= 1 / 685

= 1

So, Greatest Common Divisor of 780, 789, 617, 685 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 847, 742, 924, 315
• GCD of 804, 511, 847, 206
• GCD of 361, 877, 788, 806
• GCD of 761, 918, 498, 189
• GCD of 365, 969, 523, 314

Given numbers are 780, 789, 617, 685
The greatest common divisor of numbers 780, 789, 617, 685 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 780, 789, 617, 685 is 1.

1. What is the GCD of 780, 789, 617, 685?

GCD of given numbers 780, 789, 617, 685 is 1

2. How to calculate the greatest common divisor of 780, 789, 617, 685?

We can find the highest common divisor of 780, 789, 617, 685 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 780, 789, 617, 685 i.e 1.

3. How can I use the GCD of 780, 789, 617, 685Calculator?

Out the numbers 780, 789, 617, 685 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.