Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 550: | \[{15^{550}-1\over14}\] | 24 × 112 × 23 × 31 × 67 × 331 × 463 × 1531 × 2333 × 4931 × 8537 × 11551 × 46751 × 204601 × 1011671 × 9555151 × 8577973801<10> × 23504771357<11> × 3438685189501<13> × 58925748316711<14> × 34800625873379851<17> × 1338975703895577001<19> × 1758543013624537801<19> × 7112705843777290751<19> × 13317578924907113920801<23> × 49633948223337715645651<23> × 81903775511762714609978176176451<32> × 9273757272736041033417670310849312570581<40> × 1464434925330513778310329195572646481046251554951<49> × 20927751222519562126216951509250218352542182581570629686979930584676903649209231259510995990080325601<101> × [6066220717788527057494912885730195559462265237371683347592265281482389938959632877574226374548251435471838261993557178553076223722782944081042661106337912759366920843983447692697911923165809412928118847954601<208>] |