Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 518: | \[{15^{518}-1\over14}\] | 24 × 7 × 223 × 593 × 4441 × 7253 × 1743463 × 10678711 × 32217011 × 5928049943<10> × 41967977717<11> × 2474070455887<13> × 29645965890637091<17> × 61631055592954261<17> × 1691309974743902012809<22> × 6816897007404367128894811<25> × 582492120825067581276282544339<30> × [38004643311190128325597498649491838165834257575292350207103952179867339633536004232247111731928950290866452426733841193043118996658402006450605280372714789188436390534736364670524182374536994465095952787456107<209>] × [1427603100006025141374261895928781031472196866655635306392712378728900865955482477891918354166924528678361029082145913815674572247818943930373182711831842638825575593803002197956336522669838191952993646359737017518963422837<223>] |