Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 585: | \[{15^{585}-1\over14}\] | 11 × 53 × 61 × 131 × 181 × 241 × 541 × 1249 × 4931 × 20749 × 21061 × 65521 × 157483 × 2854567 × 4640221 × 16655159 × 39225301 × 425879726221<12> × 8038714334852962801<19> × 606451512892729597861<21> × 92978587355640205970336221<26> × 3022689049104598084874946135455929<34> × 119115855554252461371000291571475371867<39> × 17876704352384312776165924815416713005241<41> × 2019047273585208433900886541315654544678694069335036331<55> × 4811797743157031888177131043614227977499014283305880392742348701139045001<73> × [2309708793703483507338244918691598564804946360224250901875125704239641549764495067644281808622272215502992909073005280052028354198240608374095126922756899264000483174069642731296134801840195483088529991631581246670790556903889794807404537738193886601374062353618126522312266747014051052699797981710162661<304>] |