Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 473: | \[{3^{473}-1\over2}\] | 23 × 431 × 947 × 3851 × 1815542308537<13> × 380808546861411923<18> × 1261183235795048844037<22> × 201972084490941146836006403755873<33> × 374465907924345282312732259811785747279450365597577304692135222237977291048856881685511654343716403210686310843725890035278728137551<132> |