Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 152: | \[{13^{152}-1\over12}\] | 23 × 5 × 7 × 17 × 229 × 761 × 2281 × 14281 × 94621 × 692513 × 12865927 × 9468940004449<13> × 62300665486585624081<20> × 104422877883960436477<21> × 580196961910046805312944783240761<33> × 2135382121254983685021572341095722302254446826817<49> |