Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 840: | \[{20^{840}-1\over19}\] | 32 × 72 × 11 × 13 × 29 × 31 × 41 × 43 × 61 × 71 × 127 × 197 × 211 × 241 × 251 × 2812 × 401 × 421 × 491 × 617 × 701 × 827 × 911 × 1009 × 1051 × 2801 × 3001 × 10529 × 12277 × 14561 × 15121 × 17921 × 23311 × 28393 × 31177 × 32719 × 71161 × 140281 × 148721 × 152381 × 160001 × 164011 × 222361 × 261451 × 460951 × 821113 × 1464961 × 2750161 × 3551941 × 7003781 × 8651161 × 22921681 × 31585261 × 36363727 × 55191001 × 167283841 × 1424354653 × 5417928377<10> × 6674052001<10> × 8442733531<10> × 26876632021<11> × 102727298521<12> × 143677768081<12> × 172396633921<12> × 175184754697<12> × 4443547135861<13> × 4817246650081<13> × 13295107990361<14> × 13428508670641<14> × 4406613081041681<16> × 6921878367584041<16> × 338649469410070561<18> × 608569597978252121<18> × 1327100500372993081<19> × 16139875689402415201<20> × 3117271604979239730401<22> × 10967201033464229119199761<26> × 27455958930629469508499288821<29> × 10904737244627142315491733742816127002801<41> × 17324464425711912658712613307481479692869281<44> × 6653649786793219848264509905715937254842282865088095886994201<61> × 281476735929260372880093767270416777215999344635904000000160001<63> × 79228657690280051745653909230106240344858921178050291524688280070544040900255557877330500586028662679142400000000000000160001<125> × [219559055329732082369892347528201153266093151710292099571208949403705889042626255600976447627715823930865160682161690127631765153833881033101955740257343381447122310096089076272516301096509339128678087688746401<210>] |