GCD of 638, 198, 745, 155 Calculator

Given Input numbers are 638, 198, 745, 155

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

Divisors of 638 :

The positive integer divisors of 638 that completely divides 638 are.

1, 2, 11, 22, 29, 58, 319, 638

Divisors of 198 :

The positive integer divisors of 198 that completely divides 198 are.

1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198

Divisors of 745 :

The positive integer divisors of 745 that completely divides 745 are.

1, 5, 149, 745

Divisors of 155 :

The positive integer divisors of 155 that completely divides 155 are.

1, 5, 31, 155

GCD of numbers is the greatest common divisor

So, the GCD (638, 198, 745, 155) = 1.

Given numbers are 638, 198, 745, 155

The list of prime factors of all numbers are

Prime factors of 638 are 2 x 11 x 29

Prime factors of 198 are 2 x 3 x 3 x 11

Prime factors of 745 are 5 x 149

Prime factors of 155 are 5 x 31

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

Given numbers are 638, 198, 745, 155

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

Apply this formula for all numbers.

Step1:

LCM(638, 198) = 5742

GCD(638, 198) = ( 638 x 198 ) / 5742

= 638 / 198

= 638

Step2:

LCM(22, 745) = 16390

GCD(22, 745) = ( 22 x 745 ) / 16390

= 22 / 745

= 22

Step3:

LCM(1, 155) = 155

GCD(1, 155) = ( 1 x 155 ) / 155

= 1 / 155

= 1

So, Greatest Common Divisor of 638, 198, 745, 155 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 529, 765, 710, 249
• GCD of 586, 153, 666, 681
• GCD of 481, 945, 688, 862
• GCD of 568, 303, 755, 363
• GCD of 145, 154, 190, 614

Given numbers are 638, 198, 745, 155
The greatest common divisor of numbers 638, 198, 745, 155 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 638, 198, 745, 155 is 1.

1. What is the GCD of 638, 198, 745, 155?

GCD of given numbers 638, 198, 745, 155 is 1

2. How to calculate the greatest common divisor of 638, 198, 745, 155?

We can find the highest common divisor of 638, 198, 745, 155 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 638, 198, 745, 155 i.e 1.

3. How can I use the GCD of 638, 198, 745, 155Calculator?

Out the numbers 638, 198, 745, 155 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.