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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20005329237

1086CryptographySpring School Contest 20019994114

1091Tmutarakan ExamsUSU Local Contest. March 20012187494

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001438395

1118Nontrivial NumbersAutumn School Contest 2001421899

1132Square Root636652

1133Fibonacci SequenceNEERC 2001 Central Subregional2274184

1141RSA Attack1131369

1204IdempotentsUSU Local Contest. March 20021835230

1261TipsAutumn School Contest 20031243347

1268Little ChuUSU Championship 2003547781

1286Starship TravelUSU Personal Contest 2004633680

1343Fairy TaleUSU Championship 20041117393

1352Mersenne PrimesSpring School Contest 20053331133

1355Bald Spot RevisitedSpring School Contest 20051936228

1356Something EasierSpring School Contest 20051231358

1430Crime and PunishmentTimus Top Coders: First Challenge903473

1456Jedi Riddle 2Timus Top Coders: Second Challenge537774

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest580621

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest360990

1593Square Country. Version 2416741

1598DSA Attack253953

1698Square Country 5Petrozavodsk Winter 2009. USU Contest526582

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1039269

1807Cartridges for MaximNEERC 2010 Eastern Subregional1871301

2047MathsUral Championship 2015295396

2070Interesting NumbersUral Regional School Programming Contest 2015538197

2102Michael and CryptographyUral FU Junior Championship 2016625124