Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 236: | \[{15^{236}-1\over14}\] | 25 × 113 × 7907 × 5073161021<10> × 565322071603278863<18> × 298157610720691362563759<24> × 587232859318586491409325369440965227015251999<45> × 34273355136165018967113536849036352969191495671<47> × 1386870994428112456500366912174420455729317417044335046353<58> × 3778726133923153110696318066026829837326108022401965732218143226498277<70> |