Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 124: | \[{19^{124}-1\over18}\] | 23 × 5 × 181 × 373 × 774629 × 1503075053 × 14345411368517<14> × 10154018739210331<17> × 743762742808750682665930129<27> × 243270318891483838103593381595151809701<39> × 246477729928451024242825724618843299044257<42> |