GCD of 621, 831, 90, 391 Calculator

Given Input numbers are 621, 831, 90, 391

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

Divisors of 621 :

The positive integer divisors of 621 that completely divides 621 are.

1, 3, 9, 23, 27, 69, 207, 621

Divisors of 831 :

The positive integer divisors of 831 that completely divides 831 are.

1, 3, 277, 831

Divisors of 90 :

The positive integer divisors of 90 that completely divides 90 are.

1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

Divisors of 391 :

The positive integer divisors of 391 that completely divides 391 are.

1, 17, 23, 391

GCD of numbers is the greatest common divisor

So, the GCD (621, 831, 90, 391) = 1.

Given numbers are 621, 831, 90, 391

The list of prime factors of all numbers are

Prime factors of 621 are 3 x 3 x 3 x 23

Prime factors of 831 are 3 x 277

Prime factors of 90 are 2 x 3 x 3 x 5

Prime factors of 391 are 17 x 23

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

Given numbers are 621, 831, 90, 391

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

Apply this formula for all numbers.

Step1:

LCM(621, 831) = 172017

GCD(621, 831) = ( 621 x 831 ) / 172017

= 621 / 831

= 621

Step2:

LCM(3, 90) = 90

GCD(3, 90) = ( 3 x 90 ) / 90

= 3 / 90

= 3

Step3:

LCM(3, 391) = 1173

GCD(3, 391) = ( 3 x 391 ) / 1173

= 3 / 391

= 3

So, Greatest Common Divisor of 621, 831, 90, 391 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 350, 594, 77, 940
• GCD of 241, 900, 43, 375
• GCD of 487, 908, 50, 239
• GCD of 230, 103, 76, 573
• GCD of 437, 710, 89, 337

Given numbers are 621, 831, 90, 391
The greatest common divisor of numbers 621, 831, 90, 391 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 621, 831, 90, 391 is 1.

1. What is the GCD of 621, 831, 90, 391?

GCD of given numbers 621, 831, 90, 391 is 1

2. How to calculate the greatest common divisor of 621, 831, 90, 391?

We can find the highest common divisor of 621, 831, 90, 391 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 621, 831, 90, 391 i.e 1.

3. How can I use the GCD of 621, 831, 90, 391Calculator?

Out the numbers 621, 831, 90, 391 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.