Thank you for such a charming kata! I was pleased finding the necessary approach

The fact that there exist multiple duplicate approved kata doesn't mean we should allow duplicate Beta kata to sprawl. ( Look up "whataboutism". )

Cleaning up duplicates amongst approved kata is a whole other project than reviewing Beta kata. It's being done, but it takes time ( years! ).

That said, I don't necessarily agree this is a duplicate, but, not being French myself, I would tend to defering to Blind on this.

Thank you for the answer. The issue is marked resolved.

that's the thing : I am French, and thinking about my previous solutions on equivalent kata using English, I actually don't see any valuable difference. If the approach is generic enough, changing it from English to French requires only minimal changes.
Now you still can challenge the odds and resolve the issue (unless you don't have the privilege yet? if so tell me), but don't get surprised if the Kata end up retired.

Hello, Blind4Basics, and thank you for the comment on my kata!

I appreciate your feedback, but I believe your conclusion about this kata being a duplicate may not fully account for some key aspects.

I can partially agree with you on the point of the presence of duplicate katas considering the subject of converting numbers to word-representing numerals, and I saw plenty of such examples myself. But all duplicates that were observed by me at the time of speaking required converting to English representations.

Comparing the grammar rules in English, French, or other languages (including Hungarian, which was used in the kata I was inspired by), you can easily observe differences in structuring numerals, subtle nuances regarding conjunctions, plural forms, etc. Therefore, changing the language surely leaves the type of the problem the same, which is "taking an integer as an input and return a word-based representation," but the additional rules present in different languages do enhance the general principle of completing the task as well as the algorithm to solve the problem. Besides, the grammar rules in English are much simpler. As a result, switching the language adds a layer of complexity that makes this kata distinct from its English counterparts.

Additionally, another argument is related to the inconsistency of unpublishing katas on account of the fact that they are called "duplicates." It is simple to find out that there are literally dozens (to say the least) of published problems that apply the same concept, namely, converting a number to an English representation. So, it is lamentable to perceive the fact of literal published duplicates with the same language, constraints, and so forth. That is, seeing a problem that has a different language, which elevates the state of the problem based on the explanation provided in the previous paragraph, unpublished is unbelievable and agonizing.

Also, it is worth noting that as far as I browsed through Codewars, my kata is the first one that requires using French for completion. There is also one kata that uses Hungarian. If the second is not a duplicate, there might not be any unique reason to call mine a duplicate, which extends my previous argument as well.

So, considering the points mentioned above, I kindly ask you to reconsider the raise of your issue and I look forward to positive feedback from your side.

Duplicate. Changing the language doesn't change the fact there are already a solid bunch of kata about that.
Unpublishing.

Ces tests ne sont pas du tout aléatoires, sacre bleu!

What about it?

Quel bordel!

Если не является простым, то как раз и должно быть False, ещё раз почитайте условие задания

Missing a picture for the n = 3 example!

The worst kata I have ever seen. It is abysmally horrible and annoying to spend 5% of your time on actual algorithm and the rest 95% of the time for rounding the answers in order to pass all the tests

Hey, I'm glad you liked it, and congrats on solving it.

Katas have been getting way harder with time; a 6kyu nowadays is often equivallent to a few of the first 5kyu, even some 4kyu if you look hard enough. 

But the kata is really simple once you understand it, not that that's super easy, but the final solution is simple, thus, most rating it 6kyu.

It's a fabulous kata and I am glad that I did solve it.

But is it really 6 kyu? I've seen lots of extremely easier 6 kyus out there