Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 99: | \[{19^{99}-1\over18}\] | 32 × 67 × 127 × 397 × 523 × 2113 × 29989 × 104281 × 104743 × 568657 × 34451077 × 62060021 × 94192561 × 7302593769703<13> × 118556279019269161897663<24> × 201115556443680647658647001771781<33> |