Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 392: | \[{20^{392}-1\over19}\] | 3 × 73 × 29 × 71 × 197 × 401 × 617 × 827 × 1009 × 3529 × 5881 × 10529 × 14561 × 28393 × 32719 × 160001 × 269737651 × 1424354653 × 5417928377<10> × 175184754697<12> × 2488859795549<13> × 31837451863179042697<20> × 158801586229862983170858567089<30> × 6551154092925933298930251891324599<34> × 628292358238289452269193508271835428805485714102857143<54> × 5868970976675994117193657065956205629904710379447645616883364917958700241<73> × 1062739476524422823895681449082235471883003160380775129012808201177350986181761<79> × 11057938163836289972355279529754420451066736126311386256967322449314632564706966863113613059684951424772019291687898717753<122> |