Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 404: | \[{15^{404}-1\over14}\] | 25 × 113 × 1213 × 6869 × 205031 × 9264529 × 401588323 × 126531769801<12> × 94428772268291<14> × 5587621895329267<16> × 327949630610048243<18> × 9141667953856548589<19> × 78749749441179985117<20> × 3201447401347068636279040734176429<34> × 792423938062507527430649714259255216772926371811525455428211581<63> × 137227530544033625639086502329153103203779374789738946118360487688308100467<75> × 7833863884233387203359576724524785454045535502157904150269762145757169096202127819174578377135122814039232803730388293018447860100101637785965753013064947513898146421631199081<175> |