Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 247: | \[{17^{247}-1\over16}\] | 229 × 1103 × 212057 × 236627 × 55988479 × 202607147 × 291973723 × 2919196853 × 505635885366587<15> × 1145384600089709071<19> × 3011680587920033494063<22> × [2437120337889942064294433272840741909580454026243434193161930292279428516352821681160023581694055794611286852071435792643474522843020737023191541440946844819211180477435830838755229459624400770698527<199>] |