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Problem set. Number Theory Problems


1049Brave BalloonistsUSU Local Contest. March 20005308237

1086CryptographySpring School Contest 20019912114

1091Tmutarakan ExamsUSU Local Contest. March 20012181492

1104Don’t Ask Woman about Her AgeTetrahedron Team Online Contest May 2001434995

1118Nontrivial NumbersAutumn School Contest 20014179100

1132Square Root629655

1133Fibonacci SequenceNEERC 2001 Central Subregional2257185

1141RSA Attack1121370

1204IdempotentsUSU Local Contest. March 20021827229

1261TipsAutumn School Contest 20031237347

1268Little ChuUSU Championship 2003542784

1286Starship TravelUSU Personal Contest 2004629681

1343Fairy TaleUSU Championship 20041111394

1352Mersenne PrimesSpring School Contest 20053308133

1355Bald Spot RevisitedSpring School Contest 20051913230

1356Something EasierSpring School Contest 20051221359

1430Crime and PunishmentTimus Top Coders: First Challenge900472

1456Jedi Riddle 2Timus Top Coders: Second Challenge532777

1554Multiplicative FunctionsPetrozavodsk Summer 2007. NSU Contest578619

1560Elementary Symmetric FunctionsPetrozavodsk Summer 2007. NSU Contest359986

1593Square Country. Version 2412741

1598DSA Attack243966

1698Square Country 5Petrozavodsk Winter 2009. USU Contest522581

1748The Most Complex NumberPetrozavodsk Summer 2009. Ufa SATU Contest1021271

1807Cartridges for MaximNEERC 2010 Eastern Subregional1861292

2047MathsUral Championship 2015292388

2070Interesting NumbersUral Regional School Programming Contest 2015516199

2102Michael and CryptographyUral FU Junior Championship 2016598123