GCD of 155, 172, 204, 689 Calculator

Given Input numbers are 155, 172, 204, 689

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

Divisors of 155 :

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

1, 5, 31, 155

Divisors of 172 :

The positive integer divisors of 172 that completely divides 172 are.

1, 2, 4, 43, 86, 172

Divisors of 204 :

The positive integer divisors of 204 that completely divides 204 are.

1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 204

Divisors of 689 :

The positive integer divisors of 689 that completely divides 689 are.

1, 13, 53, 689

GCD of numbers is the greatest common divisor

So, the GCD (155, 172, 204, 689) = 1.

Given numbers are 155, 172, 204, 689

The list of prime factors of all numbers are

Prime factors of 155 are 5 x 31

Prime factors of 172 are 2 x 2 x 43

Prime factors of 204 are 2 x 2 x 3 x 17

Prime factors of 689 are 13 x 53

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

Given numbers are 155, 172, 204, 689

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

Apply this formula for all numbers.

Step1:

LCM(155, 172) = 26660

GCD(155, 172) = ( 155 x 172 ) / 26660

= 155 / 172

= 155

Step2:

LCM(1, 204) = 204

GCD(1, 204) = ( 1 x 204 ) / 204

= 1 / 204

= 1

Step3:

LCM(1, 689) = 689

GCD(1, 689) = ( 1 x 689 ) / 689

= 1 / 689

= 1

So, Greatest Common Divisor of 155, 172, 204, 689 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 482, 136, 775, 608
• GCD of 945, 959, 506, 428
• GCD of 224, 297, 690, 265
• GCD of 490, 939, 329, 987
• GCD of 347, 776, 446, 137

Given numbers are 155, 172, 204, 689
The greatest common divisor of numbers 155, 172, 204, 689 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 155, 172, 204, 689 is 1.

1. What is the GCD of 155, 172, 204, 689?

GCD of given numbers 155, 172, 204, 689 is 1

2. How to calculate the greatest common divisor of 155, 172, 204, 689?

We can find the highest common divisor of 155, 172, 204, 689 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 155, 172, 204, 689 i.e 1.

3. How can I use the GCD of 155, 172, 204, 689Calculator?

Out the numbers 155, 172, 204, 689 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.