Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 176: | \[{3^{176}-1\over2}\] | 25 × 5 × 17 × 23 × 41 × 67 × 89 × 193 × 661 × 3851 × 5501 × 570461 × 2382953 × 6922081 × 56625998353<11> × 15656839738849<14> × 1363620137403810529<19> |