GCD of 428, 155, 123, 684 Calculator

Given Input numbers are 428, 155, 123, 684

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

Divisors of 428 :

The positive integer divisors of 428 that completely divides 428 are.

1, 2, 4, 107, 214, 428

Divisors of 155 :

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

1, 5, 31, 155

Divisors of 123 :

The positive integer divisors of 123 that completely divides 123 are.

1, 3, 41, 123

Divisors of 684 :

The positive integer divisors of 684 that completely divides 684 are.

1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 684

GCD of numbers is the greatest common divisor

So, the GCD (428, 155, 123, 684) = 1.

Given numbers are 428, 155, 123, 684

The list of prime factors of all numbers are

Prime factors of 428 are 2 x 2 x 107

Prime factors of 155 are 5 x 31

Prime factors of 123 are 3 x 41

Prime factors of 684 are 2 x 2 x 3 x 3 x 19

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

Given numbers are 428, 155, 123, 684

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

Apply this formula for all numbers.

Step1:

LCM(428, 155) = 66340

GCD(428, 155) = ( 428 x 155 ) / 66340

= 428 / 155

= 428

Step2:

LCM(1, 123) = 123

GCD(1, 123) = ( 1 x 123 ) / 123

= 1 / 123

= 1

Step3:

LCM(1, 684) = 684

GCD(1, 684) = ( 1 x 684 ) / 684

= 1 / 684

= 1

So, Greatest Common Divisor of 428, 155, 123, 684 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 742, 351, 419, 386
• GCD of 499, 188, 104, 714
• GCD of 731, 528, 948, 807
• GCD of 164, 920, 650, 515
• GCD of 894, 783, 685, 277

Given numbers are 428, 155, 123, 684
The greatest common divisor of numbers 428, 155, 123, 684 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 428, 155, 123, 684 is 1.

1. What is the GCD of 428, 155, 123, 684?

GCD of given numbers 428, 155, 123, 684 is 1

2. How to calculate the greatest common divisor of 428, 155, 123, 684?

We can find the highest common divisor of 428, 155, 123, 684 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 428, 155, 123, 684 i.e 1.

3. How can I use the GCD of 428, 155, 123, 684Calculator?

Out the numbers 428, 155, 123, 684 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.