Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 525: | \[{20^{525}-1\over19}\] | 11 × 29 × 31 × 61 × 71 × 151 × 211 × 251 × 421 × 491 × 701 × 911 × 1051 × 1451 × 3001 × 4201 × 11251 × 23311 × 32719 × 39901 × 54601 × 92401 × 164011 × 170801 × 261451 × 460951 × 1369801 × 7466201 × 12855851 × 30715301 × 46794901 × 89453701 × 8442733531<10> × 143677768081<12> × 13295107990361<14> × 30046649412151<14> × 55250453458261951<17> × 338649469410070561<18> × 9308203137060768572251<22> × 104988737576990732806404001<27> × 27455958930629469508499288821<29> × 1148298329363846164418498090803963801<37> × 677577307119802068493653706747308600151<39> × 7644385095459483073533077694362315789551<40> × 1250811065910678639054133257566781468890091594939672209051<58> × 757113245251875998087609571371570948092290307769997811304179594844330405331956350758919556945500219836885151<108> × 49226593459952096103731088363394779969102944284455136467641544888544655844666868770678008175206224243190153406451<113> |