Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 426: | \[{15^{426}-1\over14}\] | 24 × 211 × 241 × 91733 × 5957753 × 203053327 × 1045398889 × 5852594044699<13> × 922195312138651<15> × 326189795060043679<18> × 868221032025369031<18> × 6713182133980505226300443<25> × 548604883121902124817433729373<30> × 272301574062887284439621057578687<33> × 152648701624697715072344529259283770507<39> × 57471728833380526901651769244173008971451484972209881<53> × 28173406586467221828548016914152647724311017201600241408506093027401<68> × 3051499356992774544438864682851430854369764738351568149455508117517206287<73> × 677358134706902199287462056239579828276113909947346005814622497423291181003709476289<84> |