Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
273: | \[{3^{273}-1\over2}\] | 132 × 313 × 1093 × 6553 × 7333 × 30577 × 368089 × 797161 × 4011586307 × 1636991658121<13> × 2148920356182437964673<22> × 3745603812007166116831643<25> × 6812412941375622618779314907881<31> |