Base 29 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 221: | \[{29^{221}-1\over28}\] | 521 × 3911 × 58787 × 148123 × 1977917 × 4748492087<10> × 10790135690959<14> × 33505187587603<14> × [91805230616531582406381874169344527195977884001721067020795618084529533072944674214589207120295199283484063347153541086608259806984919727396369251713765233835876398988841448234694752657763165121286696829815830934158223140943664742909941355818197909812834035394437<263>] |