sorry guys i dont undestand. I am given a query function,but i dont know N at all. where do i get N from?
Kind regards
Marco

Would it be interesting to add a batch of relatively small random tests that also output N on error, just to give users an idea in which phase of their algorithm their mistake is? Or is the fact this Query is a total black box part of the difficulty level and challenge of this kata?

much better now

I've added smaller tests

nvm, I probably made a mistake in calculations

Integer precision should be perfect up to about 4000 digits, which calculations in my kata shouldn't exceed. Maybe you're accidentally using floats somewhere? That's strange, if you're not

I don't understand Python, I thought integer precision was infinite:

698119055247942737373149623616118117019566513095661456257350274095685098756063477983242259957969120591773408829420243380792493576774337559143462333590192584413892551501066155597312352504894263922770203466862879024279844135296619832656671710831073567753660810704098296342723363668027324775849174352253474130312894352905519149806994824156361734715060967720285505284843589744663709933234188407344498510804270443362861863104298924076199109455882554489258818027306847716808148041515662957918851262460403370100247551656004146629952786541529740509966496902705513094452371188199142343915960826853605824416387371030628015059402893670790803222188713159591639181740058821989597693098749164225338160043519296450217870006566221896950544460331089966816082299916458678748757076954478433376429942344570816363234582459578828963018426946587894286422967492769189934352550456802793648810310100707946472935957304708820896065305729252362493239289587009855444381476543779685515980112324282434272329383078022065010156672628008216029714419216039668031081651633002654696870243416162007629672149594040354047636584852976664676912626979795175509754220184425749242184389213472785938542804975167582378053124924463641500757789471845548274999355110515596758250863909948493637300273698316515232531499208896899559289105491050799814297989807431359989833797135472962378003624556596720066584308350550475406149321277460505668493197107068670797334630895445020608426732285954571017104579076327124133675517728179886605740672024571355359263699288427239058474303348884537444223249500485004160197873494479949351201104970064737454270763917984405437081864087636708345906328965144955151718463933111743955988107607910504571118377535531346284706457234515306048102668938474078571815414070385612024810700448969042997715020221794687673659983494226665364808999615742664856304136550622457354577938878942984151606776434814181728229633411216455352605859752518867347193810087251674193479713008180862483537330615336440895261086770559650497132894137625846261764320752783785256040385195303394441041545501812635438207851623444295068104887687712728123130276424059488745322382744947914903913602671041888873137212629793756135553325067770678418719005061739349475711640153442228883994416335459321349396996100193746062713348555089101002325644893179136573727405114032885553814763518602266035920381364764309345615133172664129729161713041962435354572196617000478013628956027473428088791606115556645575411604588856165868230626248386427736044912472004750318166429046316315512427210971555289354074856084779203256201456938845142467587106926262400241700113885588372990114720652721651893217578221945354887409293419194374735355103865105667758661452343108391943747184550221613994885765573050911559501826818884159231642437450333836901211045302779828228320746782326144205455807103148403823518632871682764548986831476299816575575463435720776676224399463609587364545219179101974259224565092803366302423434163279318070175548910518930770848702288938136529046238838641051261526539963089752080074983429328907034809250473848616867633417617865051888759595208719016050965453596278168309331257293609075462926755449135037590441992505379578430994997847766889134654677231462496100770920879937150897018065154562383724784912030498816000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 

should equal 

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And random tests of smaller numbers first too. Massive numbers are basically undebuggable.

Random tests are horrible. No meaningful error output, just one big blob of tests. Split these tests into batches and give some proper error feedback.

.

ok, who knows if it's impossible to cheat on this kata but it's definitely a lot more difficult now

Probably have to ask Blind4Basics for this one; they have used some code similar to this (but more sophisticated) for this exact purpose in other katas.