We've recently made an accessibility improvement to the community and therefore posts without any content are no longer allowed. Please use the spoiler feature or add a short message in the message body in order to submit your weekly challenge.
alteryx Community

# Weekly Challenge

Solve the challenge, share your solution and summit the ranks of our Community!

Also available in | Français | Português | Español | 日本語
###### IDEAS WANTED

We're actively looking for ideas on how to improve Weekly Challenges and would love to hear what you think!

Submit Feedback

## Challenge #187: Generate Prime Numbers

8 - Asteroid

Here is my very un-mathematical solution.  works up to 1000, but would probably blow up a computer if ran for a large number.

Spoiler
12 - Quasar

My solution:

Spoiler
Haha, my CLUNKY solution. I really enjoyed seeing other (MORE EFFICIENT!) solutions to this challenge.

5 - Atom
Spoiler

First weekly challenge!

8 - Asteroid
Spoiler

10 - Fireball

First challenge completed!

Spoiler
7 - Meteor

Good fun! Solution is attached and available below 🙂

Spoiler

6 - Meteoroid

A little of a mess with the flags & logic in the formula tool, but surprisingly easy!

I've never used the generate Rows before - thought it would be better to use it in a batch macro - but the duplicated Append Fields method is much easier.

6 - Meteoroid

I tried two different versions - Brute force and using the method 'Sieve Of Eratosthenes'

The first one crashed around 100,000 records while the second can output results for 10M of records in 1 minute.

15 - Aurora
Spoiler
Love a good math problem!

6 - Meteoroid

My attempt. Couldn't think how to tackle this easily using Alteryx tools, so had a go using the Python tool. Getting a strange error though regarding metadata, but outputs the answer.

Spoiler