Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 516: | \[{18^{516}-1\over17}\] | 52 × 73 × 13 × 19 × 173 × 229 × 307 × 431 × 457 × 1033 × 1291 × 6967 × 8429 × 21673 × 95203 × 221623 × 1354501 × 4555249 × 5129762401<10> × 9581702213<10> × 597455435179<12> × 1830508640697003889<19> × 4464951753212028068412713<25> × 28971751902509263440682681<26> × 30517223903639226201185821<26> × 18929430509608545389368331983<29> × 23533969551787559303015556601<29> × 16276512351314787405765413256433<32> × 10403007323439753521817766790548683893041<41> × 43983075563266931110717441203192765085093<41> × 4497815709101995935577394185688589500494821854381<49> × 46677326033015979997306395190640080028610270289985557127346258331<65> × 64413102050784374992944016379643363345005814927537524599726751816854326513997069<80> × 2896147166281789396628168923597019100937776809006245116775732352715267153333014314770396294735298249<100> |