GCD of 398, 245, 258, 620 Calculator

Given Input numbers are 398, 245, 258, 620

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

Divisors of 398 :

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

1, 2, 199, 398

Divisors of 245 :

The positive integer divisors of 245 that completely divides 245 are.

1, 5, 7, 35, 49, 245

Divisors of 258 :

The positive integer divisors of 258 that completely divides 258 are.

1, 2, 3, 6, 43, 86, 129, 258

Divisors of 620 :

The positive integer divisors of 620 that completely divides 620 are.

1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620

GCD of numbers is the greatest common divisor

So, the GCD (398, 245, 258, 620) = 1.

Given numbers are 398, 245, 258, 620

The list of prime factors of all numbers are

Prime factors of 398 are 2 x 199

Prime factors of 245 are 5 x 7 x 7

Prime factors of 258 are 2 x 3 x 43

Prime factors of 620 are 2 x 2 x 5 x 31

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

Given numbers are 398, 245, 258, 620

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

Apply this formula for all numbers.

Step1:

LCM(398, 245) = 97510

GCD(398, 245) = ( 398 x 245 ) / 97510

= 398 / 245

= 398

Step2:

LCM(1, 258) = 258

GCD(1, 258) = ( 1 x 258 ) / 258

= 1 / 258

= 1

Step3:

LCM(1, 620) = 620

GCD(1, 620) = ( 1 x 620 ) / 620

= 1 / 620

= 1

So, Greatest Common Divisor of 398, 245, 258, 620 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 606, 939, 331, 998
• GCD of 226, 752, 544, 910
• GCD of 699, 928, 240, 727
• GCD of 442, 291, 112, 618
• GCD of 823, 509, 464, 883

Given numbers are 398, 245, 258, 620
The greatest common divisor of numbers 398, 245, 258, 620 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 398, 245, 258, 620 is 1.

1. What is the GCD of 398, 245, 258, 620?

GCD of given numbers 398, 245, 258, 620 is 1

2. How to calculate the greatest common divisor of 398, 245, 258, 620?

We can find the highest common divisor of 398, 245, 258, 620 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 398, 245, 258, 620 i.e 1.

3. How can I use the GCD of 398, 245, 258, 620Calculator?

Out the numbers 398, 245, 258, 620 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.