Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 214: | \[{22^{214}-1\over21}\] | 23 × 1499 × 7919 × 15902983 × 7055381953272643<16> × 6264985442340909242953049437533761<34> × 2486659875442265094528203519052999682443295585772151030375239951628276715232443<79> × 18945192042263643329363679815237998895600231463436643783970528592014150684862109085125696833486419183518228504356261630974269369185348253202343<143> |