Base 23 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 260: | \[{23^{260}-1\over22}\] | 24 × 3 × 52 × 31 × 41 × 53 × 61 × 131 × 157 × 211 × 911 × 941 × 31721 × 198901 × 272341 × 292561 × 2861561 × 4922971 × 10747361 × 47691619 × 278640181 × 480393499 × 880665761 × 3829141917458729<16> × 21001515080686141<17> × 35157584639811369918784681<26> × 1550738312754197195984990763641083397417745874324021<52> × 1837165035394032425658005191754280524104045807345924917984705131<64> × 805236604450291766429925869094550721268109395234039031719544941648618574982157688981<84> |