GCD of 650, 780, 421, 398 Calculator

Given Input numbers are 650, 780, 421, 398

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

Divisors of 650 :

The positive integer divisors of 650 that completely divides 650 are.

1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650

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 421 :

The positive integer divisors of 421 that completely divides 421 are.

1, 421

Divisors of 398 :

The positive integer divisors of 398 that completely divides 398 are.

1, 2, 199, 398

GCD of numbers is the greatest common divisor

So, the GCD (650, 780, 421, 398) = 1.

Given numbers are 650, 780, 421, 398

The list of prime factors of all numbers are

Prime factors of 650 are 2 x 5 x 5 x 13

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

Prime factors of 421 are 421

Prime factors of 398 are 2 x 199

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

Given numbers are 650, 780, 421, 398

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

Apply this formula for all numbers.

Step1:

LCM(650, 780) = 3900

GCD(650, 780) = ( 650 x 780 ) / 3900

= 650 / 780

= 650

Step2:

LCM(130, 421) = 54730

GCD(130, 421) = ( 130 x 421 ) / 54730

= 130 / 421

= 130

Step3:

LCM(1, 398) = 398

GCD(1, 398) = ( 1 x 398 ) / 398

= 1 / 398

= 1

So, Greatest Common Divisor of 650, 780, 421, 398 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 130, 287, 792, 122
• GCD of 968, 156, 803, 650
• GCD of 647, 621, 571, 634
• GCD of 278, 114, 241, 836
• GCD of 129, 596, 264, 478

Given numbers are 650, 780, 421, 398
The greatest common divisor of numbers 650, 780, 421, 398 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 650, 780, 421, 398 is 1.

1. What is the GCD of 650, 780, 421, 398?

GCD of given numbers 650, 780, 421, 398 is 1

2. How to calculate the greatest common divisor of 650, 780, 421, 398?

We can find the highest common divisor of 650, 780, 421, 398 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 650, 780, 421, 398 i.e 1.

3. How can I use the GCD of 650, 780, 421, 398Calculator?

Out the numbers 650, 780, 421, 398 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.