Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 245: | \[{31^{245}-1\over30}\] | 5 × 11 × 491 × 6959 × 17351 × 319061 × 203633641 × 917087137 × 29220445871<11> × 1325489196571<13> × 9240957640390889951861<22> × 62322419393153627851729037464684263699383389269055382039663<59> × [1860458732272543825617249078563416647740839071322122820303214611417959303512382934843833487377447335156595437233042160568912036216016145577414598057023467341431610271152785515884246443969149177822890185912364670147496702277591<226>] |