Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 185: | \[{31^{185}-1\over30}\] | 5 × 11 × 149 × 4219 × 17351 × 22909356601<11> × 152597832677<12> × 257803457371<12> × 301442728121<12> × 386626708057<12> × 38012170787881<14> × 52812493022953<14> × 21654345567838721<17> × 4940113209560069716180214141<28> × 1965265126570460399197718996513765761238039472102128722677932997502650503472184879629042698778658514176922663923067448072380348767351901<136> |