Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 249: | \[{18^{249}-1\over17}\] | 73 × 167 × 59263 × 1720591 × 854684191369<12> × 75296037703252055234689096886743153<35> × 86802964875867109109279559751944809<35> × 10293037233148196200176183503634629918683519<44> × 10547130976787567739760741415960485703934860841255807268617487<62> × 60693578232686315035732372973522998320863260563904743553369788826358309153528189046392492672898461212090888783<110> |