Base 16 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 218: | \[{16^{218}-1\over15}\] | 17 × 5669 × 598193 × 104124649 × 666184021 × 745988807 × 74323515777853<14> × 1746518852140345553<19> × 171857646012809566969<21> × 870035986098720987332873<24> × 2077756847362348863128179<25> × 35695338233523972669330604417<29> × 576694829762330794568961139476826913<36> × 847676809695323228372386223737948820266344360100553839813537<60> |