Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
206: | \[{6^{206}-1\over5}\] | 7 × 2473 × 5563 × 7211 × 160681 × 135025379 × 12767653355301160780822191431160569156710177181791578590824899905497<68> × 20704743230318258100890022657208522727453596408722228548650415542999<68> |