Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 276: | \[{3^{276}-1\over2}\] | 23 × 5 × 7 × 13 × 47 × 73 × 139 × 277 × 5107 × 9109 × 132619 × 1476463 × 12553493 × 1001523179 × 23535794707<11> × 70601370627701<14> × 2461243576713869557<19> × 1076050302914923449767311155851656076154481<43> |