Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 43: | \[{19^{43}-1\over18}\] | 18917672548149688895557513<26> × 28461948730641665973894996037<29> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 43: | \[{19^{43}-1\over18}\] | 18917672548149688895557513<26> × 28461948730641665973894996037<29> |