Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 658: | \[{15^{658}-1\over14}\] | 24 × 7 × 283 × 659 × 2351 × 2633 × 6299 × 140813 × 183959 × 1743463 × 10678711 × 135261208727<12> × 612583112093<12> × 2947920462206937499<19> × 74607964119971547806213<23> × 400546952025958526341824468624883789<36> × 2656097495066872027407960633754824283<37> × [160253272898000080282844836468230700474819914069116799557132100839706444705006943648637488557190671725797456744102932035316714494850648093915167950775818850881817570825151889094724201763275972997526387216195483276874521228179710825436145971897041087703492259577142324200468369293175703427<288>] × [43193312111668871280577122481604258062686078710386640575501910750659932431059967294734585494526590996889176602759639760666588468377203558347383252583181623022276539723686737184702171071809728930882753812230996249361330136316383022426749206487761486295902935099798906802300158021158891379904961227447960220329<308>] |