Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 680: | \[{5^{680}-1\over4}\] | 23 × 3 × 11 × 13 × 41 × 71 × 137 × 241 × 313 × 409 × 521 × 1361 × 1531 × 1973 × 3061 × 8161 × 9161 × 14281 × 17681 × 20129 × 45289 × 623017 × 14239201 × 41540861 × 75752681 × 87393601 × 247515241 × 466344409 × 504156421 × 632133361 × 12447002677<11> × 938894988049<12> × 1361753880209<13> × 4959636586609<13> × 34563155350221618511<20> × 68795069664507129341<20> × 8198241112969626815581<22> × 48886055402391862040941201<26> × 1972618762904267665190337601<28> × 6405730905595298015162543537765377017161<40> × 11441045552404091443187740021633178237681<41> × 1071801877616557295939518223406078918358739766902448375065776242253825938741304175015824505434778591137681<106> |