Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 226: | \[{18^{226}-1\over17}\] | 19 × 227 × 21019 × 250409 × 987640793 × 172438769983<12> × 1684892449074870904774581891396161<34> × 183307169110277715643522678830938546395063517208601054382983367590920578131533991744298880680723<96> × 2421643556857230748801093736803322118530010960526216366672882102828558542550258099313293778604340399952135049650486255129<121> |