Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 665: | \[{13^{665}-1\over12}\] | 191 × 211 × 2129 × 27361 × 30941 × 4986361 × 5229043 × 12865927 × 3357897971 × 9468940004449<13> × 50572358164511<14> × 707179356161321<15> × 5665149551002469378124906493775113839759111608599508854624282853831<67> × 876888326003646957739121814711911814555937007963385213868622003501562224538027600538016170329361310597317151382384041<117> × [358406536154597092947400338949343508962349233649231970300639234116212740823175038778385260862858979488398502539714609799591053150517081152364733916372538485422273001962908551114174801307103718142006248825877831309964304109313037622639718525103495548317828416086914260179429725582825014340732908231330573574959623965028556830758139974464268102975505153406438216874741390114702035741390854415076306011202548810825676635860554235021839678491888729217976675686414899349631<468>] |