Base 9 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 196: | \[{9^{196}-1\over8}\] | 22 × 5 × 29 × 41 × 197 × 491 × 547 × 1093 × 4019 × 8233 × 16493 × 16661 × 51157 × 131713 × 430697 × 647753 × 251325313 × 857643277 × 127522693159<12> × 426712077457<12> × 34013149495921<14> × 342875768396449<15> × 418055555418935587626051091603744048562522536622075430660388662769<66> |