Base 12 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 247: | \[{12^{247}-1\over11}\] | 263303 × 320113 × 477517 × 20369233 × 45198395571733<14> × 29043636306420266077<20> × 181384271025146414891081795590642472433633074203346511651451593014726951273853234819568382677073912063<102> × 168220462962977503760438745102669490754267838969604122398351068007188118185347820192069372453605907768912441<108> |