GCD of 998, 390, 478, 257 Calculator

Given Input numbers are 998, 390, 478, 257

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

Divisors of 998 :

The positive integer divisors of 998 that completely divides 998 are.

1, 2, 499, 998

Divisors of 390 :

The positive integer divisors of 390 that completely divides 390 are.

1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390

Divisors of 478 :

The positive integer divisors of 478 that completely divides 478 are.

1, 2, 239, 478

Divisors of 257 :

The positive integer divisors of 257 that completely divides 257 are.

1, 257

GCD of numbers is the greatest common divisor

So, the GCD (998, 390, 478, 257) = 1.

Given numbers are 998, 390, 478, 257

The list of prime factors of all numbers are

Prime factors of 998 are 2 x 499

Prime factors of 390 are 2 x 3 x 5 x 13

Prime factors of 478 are 2 x 239

Prime factors of 257 are 257

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

Given numbers are 998, 390, 478, 257

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

Apply this formula for all numbers.

Step1:

LCM(998, 390) = 194610

GCD(998, 390) = ( 998 x 390 ) / 194610

= 998 / 390

= 998

Step2:

LCM(2, 478) = 478

GCD(2, 478) = ( 2 x 478 ) / 478

= 2 / 478

= 2

Step3:

LCM(2, 257) = 514

GCD(2, 257) = ( 2 x 257 ) / 514

= 2 / 257

= 2

So, Greatest Common Divisor of 998, 390, 478, 257 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 941, 730, 816, 575
• GCD of 280, 380, 525, 561
• GCD of 309, 558, 740, 805
• GCD of 356, 366, 893, 571
• GCD of 247, 293, 873, 363

Given numbers are 998, 390, 478, 257
The greatest common divisor of numbers 998, 390, 478, 257 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 998, 390, 478, 257 is 1.

1. What is the GCD of 998, 390, 478, 257?

GCD of given numbers 998, 390, 478, 257 is 1

2. How to calculate the greatest common divisor of 998, 390, 478, 257?

We can find the highest common divisor of 998, 390, 478, 257 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 998, 390, 478, 257 i.e 1.

3. How can I use the GCD of 998, 390, 478, 257Calculator?

Out the numbers 998, 390, 478, 257 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.