Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 104: | \[{19^{104}-1\over18}\] | 24 × 5 × 17 × 53 × 131 × 181 × 313 × 599 × 2393 × 3833 × 7177 × 29251 × 176021 × 291331 × 133338869 × 69034016679735329<17> × 92174159182574048847888178637<29> × 20240476166390259493325765865267467809<38> |