Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 258: | \[{18^{258}-1\over17}\] | 73 × 19 × 307 × 431 × 1033 × 1291 × 6967 × 21673 × 95203 × 221623 × 4555249 × 5129762401<10> × 597455435179<12> × 1830508640697003889<19> × 4464951753212028068412713<25> × 28971751902509263440682681<26> × 18929430509608545389368331983<29> × 23533969551787559303015556601<29> × 16276512351314787405765413256433<32> × 10403007323439753521817766790548683893041<41> × 46677326033015979997306395190640080028610270289985557127346258331<65> |