Base 9 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 98: | \[{9^{98}-1\over8}\] | 2 × 5 × 29 × 197 × 491 × 547 × 1093 × 4019 × 8233 × 16493 × 16661 × 51157 × 131713 × 251325313 × 857643277 × 127522693159<12> × 426712077457<12> × 34013149495921<14> |