GCD of 780, 997, 644, 145 Calculator

Given Input numbers are 780, 997, 644, 145

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 997 :

The positive integer divisors of 997 that completely divides 997 are.

1, 997

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

Divisors of 145 :

The positive integer divisors of 145 that completely divides 145 are.

1, 5, 29, 145

GCD of numbers is the greatest common divisor

So, the GCD (780, 997, 644, 145) = 1.

Given numbers are 780, 997, 644, 145

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 997 are 997

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

Prime factors of 145 are 5 x 29

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

Given numbers are 780, 997, 644, 145

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

Apply this formula for all numbers.

Step1:

LCM(780, 997) = 777660

GCD(780, 997) = ( 780 x 997 ) / 777660

= 780 / 997

= 780

Step2:

LCM(1, 644) = 644

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

= 1 / 644

= 1

Step3:

LCM(1, 145) = 145

GCD(1, 145) = ( 1 x 145 ) / 145

= 1 / 145

= 1

So, Greatest Common Divisor of 780, 997, 644, 145 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 308, 868, 924, 370
• GCD of 780, 774, 218, 957
• GCD of 576, 727, 609, 763
• GCD of 623, 932, 353, 710
• GCD of 404, 118, 918, 692

Given numbers are 780, 997, 644, 145
The greatest common divisor of numbers 780, 997, 644, 145 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 780, 997, 644, 145 is 1.

1. What is the GCD of 780, 997, 644, 145?

GCD of given numbers 780, 997, 644, 145 is 1

2. How to calculate the greatest common divisor of 780, 997, 644, 145?

We can find the highest common divisor of 780, 997, 644, 145 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, 997, 644, 145 i.e 1.

3. How can I use the GCD of 780, 997, 644, 145Calculator?

Out the numbers 780, 997, 644, 145 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.