Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 518: | \[{20^{518}-1\over19}\] | 3 × 72 × 29 × 71 × 149 × 827 × 10529 × 32719 × 65269 × 368447 × 2889957151 × 48452289872449<14> × 9609038940231949<16> × 98251725447004143701<20> × 124065005275823894023123<24> × 383493384240205993228059557962159<33> × 17756606902178689272477900467018269<35> × 21970991885930570026661575652295529<35> × [956529817371380365239026457415547399508844466631620155294398917938481962597599350339077607482325347306524563181889502064792186750330088551619069475434051621385569592786161834544201112531847805275972208074659788561<213>] × 6227423221946104842367618534852284777300302098001691313483597830555650075218696333363003519000390173169434094658524453397731774169956563294360305167379528119688041924374345069638615560696251898004513264597109255190471816982462931536010959558712409<247> |