Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 509: | \[{3^{509}-1\over2}\] | 1019 × 7127 × 54973 × 97729 × 14495303 × 324927277 × 59561824373572167761652488341<29> × 1408323592065265621229603282020508687<37> × 23214049468525744074633683839531277461402596152346780076104082330578039306505889278179026503395282728989110957696917932365850935308873749615837273<146> |