Base 9 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 454: | \[{9^{454}-1\over8}\] | 2 × 5 × 28603 × 31327 × 34622041 × 1533148921 × 19907051929<11> × 28279305227149<14> × 159115826893295896177<21> × 75743328083517433389294793<26> × 86695423725589885803695742296342497463<38> × 172082606697351874048297611535769781027854439065671<51> × 586802158643368690388409871761484798763798234696414454735059<60> × 74470384522564833298454759466299332761071975173848833479724159590941066716276151509845384673161374520245815798948193821468218654502211836374369614067481081732544202925959870093219274801281<188> |