Base 23 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 520: | \[{23^{520}-1\over22}\] | 25 × 3 × 52 × 31 × 41 × 53 × 61 × 131 × 157 × 211 × 313 × 521 × 911 × 941 × 3121 × 5081 × 31721 × 139921 × 198901 × 272341 × 292561 × 2861561 × 4922971 × 10747361 × 47691619 × 278640181 × 480393499 × 880665761 × 3829141917458729<16> × 21001515080686141<17> × 1206964869343609001<19> × 35157584639811369918784681<26> × 1550738312754197195984990763641083397417745874324021<52> × 736868920565558735424457780790315662459263032384484327940915657<63> × 1837165035394032425658005191754280524104045807345924917984705131<64> × 805236604450291766429925869094550721268109395234039031719544941648618574982157688981<84> × [1740261752427731420606295307588838207880070732047973017504999642249576265262627917489462244190171016657080974703289699237184976781258537989656943256159460005254914366527241262079431405100414553547931580745262995282500007093818210293713540106999555667069321<256>] |