Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 170: | \[{3^{170}-1\over2}\] | 22 × 112 × 61 × 103 × 307 × 1021 × 1531 × 1871 × 34511 × 224401 × 2663568851051<13> × 862970652262943171<18> × 13271362257832586268931<23> |