Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 198: | \[{19^{198}-1\over18}\] | 22 × 32 × 5 × 73 × 23 × 67 × 127 × 199 × 397 × 523 × 859 × 2113 × 4951 × 29989 × 104281 × 104743 × 236377 × 489061 × 519553 × 568657 × 798139 × 34451077 × 62060021 × 94192561 × 181258778383<12> × 253239693257<12> × 7302593769703<13> × 118556279019269161897663<24> × 201115556443680647658647001771781<33> × 13443362549643844209502893419450829146263690098057812013511771165309<68> |