Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 522: | \[{20^{522}-1\over19}\] | 33 × 7 × 59 × 127 × 307 × 349 × 421 × 523 × 929 × 1567 × 1741 × 8179 × 8527 × 10789 × 16183 × 69481 × 143609 × 278227 × 564979 × 1177459 × 10220239 × 64008001 × 466307299 × 67054458649<11> × 93399789601<11> × 247703602429<12> × 71353204641689<14> × 382963797404731<15> × 10940140435272203<17> × 134223608855082547<18> × 374031166412186483892103<24> × 96300162662699234956876309<26> × 2097957102415029980636836147<28> × 12058479697803056289880300867<29> × 6668553997058753728708371110466799080849771501941623<52> × 3605403851353821123741083595382953185544609831777342451<55> × 919069950968118256034743160704302386110903114669325655495816786667423255854332357082712893024778817755174783<108> × [992519819464950999005511173045151157199431534863578336168408868138009790540090359195248017411269133891411428303061508116586190108986039627301058496921364790844858147713321<171>] |