Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 819: | \[{8^{819}-1\over7}\] | 7 × 73 × 79 × 127 × 337 × 911 × 937 × 6553 × 8191 × 86113 × 92737 × 121369 × 262657 × 446473 × 565111 × 649657 × 1410319 × 1560007 × 21287449 × 29121769 × 41194063 × 108749551 × 112901153 × 7830118297<10> × 23140471537<11> × 571890896913727<15> × 2681001528674743<16> × 4093204977277417<16> × 93715008807883087<17> × 16751168775662428927<20> × 86977595801949844993<20> × 150832426800173710177<21> × 207617485544258392970753527<27> × 219516331727145697249308031<27> × 1786131074995391292297656133027144291751<40> × 21494973179303913190133458460563964459380529075838941297352657742148160962406273546512257<89> × [65366559994663933157057243015169621265287124091545897262869541733604392144932424885426355007694011617559118545796975468017769164964954478641798626406268088097498917496106751942266507779246680032532601276942123219715189008448669878537264824120950132705289921569592697161029486048627047886806851329835345431<305>] |