Challenge #79: Find the Closest Prime Number

[Laurap1228]

Here is my solution. I translated this from a python algorithm I wrote.

[pasccout]

Here is my solution

[jssandom]

My solution

[kelly_gilbert]

Spoiler

I chose the nested macro approach.

Outer workflow:



Outer macro (finds the nearest prime number):



Inner macro (tests whether or not a number is prime):

[justynam]

I implemented one iterative macro - Sieve of Eratosthenes to find all prime numbers within range 2 - 2*Number

Then finding Prime Number closest to Number is easy.

Spoiler

 

Iterative macro - Sieve of Eratosthenes

[justynam]

and the file with the solution

[OldDogNewTricks]

Attached is my solution.  I created an app that takes a number and finds the closest prime above and below the given number.  I'm using a Python node to do the heavy lifting. 

The result looks like this:

Spoiler

[ipeng]

Solution attached!

[RichoBsJ]

Cooool challenge :)

Here my prime calculator app!

Spoiler