Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 451: | \[{8^{451}-1\over7}\] | 23 × 89 × 13367 × 18041 × 40591 × 216481 × 599479 × 3887047 × 164511353 × 9718704501529<13> × 17057505207007<14> × 177722253954175633<18> × 538939720215834697<18> × 15515986997325774196249<23> × 63146810207339718162566404988206179064461273050603002917638397126970137660970487<80> × 720181093053202467012446297562943656437971180451526286650347317745144982356739865903<84> × 1507495708277973209872244123631986464514325130087929963124561378508968082111026592896877471703414846574391391044423809<118> |