Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 228: | \[{7^{228}-1\over6}\] | 24 × 3 × 52 × 13 × 192 × 43 × 181 × 229 × 419 × 457 × 19609 × 351121 × 879399649 × 4058036683 × 24006520939<11> × 4534166740403<13> × 6957533874046531<16> × 275430251632699963<18> × 2598696228942460402343442913969<31> × 31332397785971288952441863365518449891779734866979148280269<59> |