Base 23 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 130: | \[{23^{130}-1\over22}\] | 23 × 3 × 31 × 41 × 131 × 211 × 911 × 31721 × 292561 × 4922971 × 47691619 × 480393499 × 21001515080686141<17> × 1550738312754197195984990763641083397417745874324021<52> × 1837165035394032425658005191754280524104045807345924917984705131<64> |