Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 840: | \[{15^{840}-1\over14}\] | 26 × 7 × 11 × 13 × 17 × 29 × 31 × 41 × 43 × 61 × 71 × 113 × 211 × 241 × 281 × 421 × 1201 × 1489 × 1531 × 3361 × 3877 × 4201 × 4931 × 17761 × 19231 × 19421 × 33601 × 131381 × 142111 × 278041 × 327517 × 531581 × 723031 × 1743463 × 4167731 × 10123513 × 10678711 × 39225301 × 113294161 × 191354311 × 373087961 × 497638891 × 706195561 × 2414458561 × 2562840001 × 218800910441<12> × 363860910841<12> × 725177029417<12> × 766028506097<12> × 2399150554081<13> × 2817034275427<13> × 4454215139669<13> × 133390439104361<15> × 21975395880100433<17> × 15360796671433620373<20> × 36083117529286469251<20> × 53096945644422356461<20> × 1006101271862820362016481<25> × 14248663932290065014093421<26> × 24596480723711374110433501<26> × 5016566052251552121587043361<28> × 25829131190962585221978577441<29> × 44302140197578717455741337921<29> × 12340745958492257916284855626741<32> × 38602348691025427791666546447549336481<38> × 1471639728507736930149132068430094904381<40> × 135547955016772912878990477144413552311005261821563500132572681<63> × 7932768905454001682788103126150859356223484658332619961547715995032604114192277379825237553430521<97> × [11347471420791959677971835694286466729994060884480229824719489863611603876933856193199378895022898778495632618105953131948605965998145497163631952783805916001865349791202643021210774958971281<191>] |