Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 169: | \[{19^{169}-1\over18}\] | 599 × 29251 × 133338869 × 63725648128149671826207359193122737526111416347995452960729897714393<68> × 480006907877942117048885596560428966034382490628924431587365050763653774734575730530328446111716515421396948561484298257091050537937<132> |