Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 287: | \[{18^{287}-1\over17}\] | 449 × 2297 × 50513 × 80207 × 819673 × 3811279 × 11792831 × 114341047 × 1675775634673462276106313211009<31> × 28724970394535916699068164202453497<35> × 394867037344695962525971723264825927<36> × [322314110222701644616756189442857197007023755537905211711091285610144492311135211251299502745460085709365973230629880924810139234502068381169273258853001614009579060940666050187898812767076585739740401745224410039609<216>] |