Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 287: | \[{15^{287}-1\over14}\] | 7 × 1743463 × 169879319 × 8430332222527<13> × 14052995136749824817978552692323583<35> × [10041496498909989564558623703899486240448815928804402742040188319984057285575712078389213903405336613893235393072596458717072498877365965463102998198754332497434110480682486745337642222536516331144537707589588417145628825277042175391534349800671601848771385327594496465991719<275>] |