Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 221: | \[{17^{221}-1\over16}\] | 443 × 10949 × 151607 × 212057 × 1749233 × 61464521 × 2699538733 × 2919196853 × 182098200077<12> × 4183933008529<13> × 45030613823102801205431454881802464876356671869172381628389145769685992228369949020564848820213<95> × 1171435124854390194439127833739349552539379210021331500894627960406445584384514232759227370332033583869<103> |