Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 594: | \[{20^{594}-1\over19}\] | 34 × 7 × 23 × 67 × 109 × 127 × 199 × 307 × 421 × 661 × 859 × 1783 × 4483 × 37423 × 38149 × 56431 × 69481 × 2355211 × 3049927 × 64008001 × 99672121 × 879338701 × 1794112741 × 424016563147<12> × 10778947368421<14> × 14121717629581<14> × 298114935351301<15> × 175462044485240500219<21> × 922369047390135978639798529<27> × 12992593428389191667383293584162419<35> × 445857960156220211502282409711073343103021<42> × 1250113089825917214320490810908618794473831378005569<52> × [11530593243662155843190161040849760694985175768652652916729032170587473704336590930036361203265957189809429094921815334007217124832951314866522231187924631163769092776009775799068755522248443002993871916867396957467316827661<224>] × [22967264753998477752412895646783066932591556635482066937897436473559839666234247042894821795414179100660862863835210417210670892924429587948484622215086013793857683874623854823474348353107912790850364601814465654202746671059689<227>] |