Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 370: | \[{31^{370}-1\over30}\] | 25 × 5 × 11 × 41 × 149 × 4219 × 17351 × 21821 × 119881 × 22909356601<11> × 152597832677<12> × 257803457371<12> × 301442728121<12> × 386626708057<12> × 38012170787881<14> × 52812493022953<14> × 729537904146941<15> × 21654345567838721<17> × 82231433811238241<17> × 139173404304123698745671<24> × 969963587051157584202299<24> × 2049403048496149542663091<25> × 4940113209560069716180214141<28> × 488064548082098022956156062559<30> × 28698055554450455831885339891209339198689107661345765208826605235825411050513782618498568579348105606054749192678043084250607333641<131> × 1965265126570460399197718996513765761238039472102128722677932997502650503472184879629042698778658514176922663923067448072380348767351901<136> |