Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 136: | \[{19^{136}-1\over18}\] | 24 × 5 × 172 × 1372 × 181 × 409 × 3833 × 3044803 × 29935777 × 99995282631947<14> × 3084256577008769<16> × 274019342889240109297<21> × 1433250916087597060721<22> × 2168875009642198021909889<25> × 15333095456657598053138817864448807737966993529<47> |