GCD of 688, 639, 135, 243 Calculator

Given Input numbers are 688, 639, 135, 243

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

Divisors of 688 :

The positive integer divisors of 688 that completely divides 688 are.

1, 2, 4, 8, 16, 43, 86, 172, 344, 688

Divisors of 639 :

The positive integer divisors of 639 that completely divides 639 are.

1, 3, 9, 71, 213, 639

Divisors of 135 :

The positive integer divisors of 135 that completely divides 135 are.

1, 3, 5, 9, 15, 27, 45, 135

Divisors of 243 :

The positive integer divisors of 243 that completely divides 243 are.

1, 3, 9, 27, 81, 243

GCD of numbers is the greatest common divisor

So, the GCD (688, 639, 135, 243) = 1.

Given numbers are 688, 639, 135, 243

The list of prime factors of all numbers are

Prime factors of 688 are 2 x 2 x 2 x 2 x 43

Prime factors of 639 are 3 x 3 x 71

Prime factors of 135 are 3 x 3 x 3 x 5

Prime factors of 243 are 3 x 3 x 3 x 3 x 3

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

Given numbers are 688, 639, 135, 243

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

Apply this formula for all numbers.

Step1:

LCM(688, 639) = 439632

GCD(688, 639) = ( 688 x 639 ) / 439632

= 688 / 639

= 688

Step2:

LCM(1, 135) = 135

GCD(1, 135) = ( 1 x 135 ) / 135

= 1 / 135

= 1

Step3:

LCM(1, 243) = 243

GCD(1, 243) = ( 1 x 243 ) / 243

= 1 / 243

= 1

So, Greatest Common Divisor of 688, 639, 135, 243 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 644, 600, 350, 732
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Given numbers are 688, 639, 135, 243
The greatest common divisor of numbers 688, 639, 135, 243 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 688, 639, 135, 243 is 1.

1. What is the GCD of 688, 639, 135, 243?

GCD of given numbers 688, 639, 135, 243 is 1

2. How to calculate the greatest common divisor of 688, 639, 135, 243?

We can find the highest common divisor of 688, 639, 135, 243 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 688, 639, 135, 243 i.e 1.

3. How can I use the GCD of 688, 639, 135, 243Calculator?

Out the numbers 688, 639, 135, 243 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.