Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 319: | \[{31^{319}-1\over30}\] | 23 × 349 × 397 × 617 × 10789 × 49823 × 19637641 × 150332843 × 1482570191 × 11242578713<11> × 189343400041<12> × [187907674625504363262432484660868732788252529310469380436604711009976614175455597154010675447905253808125978135710677998701279091561543600315041990887318282242517398794348354919916617876141522116416970162361711528470713965310147333035986150348900102314204569149378466330907191630445647115616055743271871802043165954050580301591308646967975079736157446810689489386640640372220402201638526352675500359694715151161<411>] |