Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 350: | \[{20^{350}-1\over19}\] | 3 × 72 × 11 × 29 × 61 × 71 × 101 × 151 × 251 × 491 × 701 × 827 × 911 × 1451 × 10529 × 17921 × 23311 × 32719 × 92401 × 152381 × 164011 × 170801 × 1369801 × 7003781 × 7466201 × 12855851 × 30715301 × 31585261 × 46794901 × 89453701 × 9090211201<10> × 4443547135861<13> × 13295107990361<14> × 30046649412151<14> × 55250453458261951<17> × 1038193734970398415809901<25> × 1148298329363846164418498090803963801<37> × 1250811065910678639054133257566781468890091594939672209051<58> × 146226350716960042135550965040778809094945729892616007586897955773790401427101460444715933298121796891378014186172951724519325660019942588350428801<147> |