Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 116: | \[{15^{116}-1\over14}\] | 25 × 59 × 113 × 233 × 1074277 × 281589769 × 1240581007181<13> × 15476275967141572773889537007699<32> × 798962746803683694452047348022461<33> × 8269331225814050337668692222063804849<37> |