tables > repunit > 20

Base 20 Repunits

Table

Viewing: 644 – 644 << prev next >>

(available: 0-999)

Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>

644: \[{20^{644}-1\over19}\] 3 × 72 × 29 × 47 × 71 × 197 × 401 × 461 × 691 × 827 × 1289 × 1381 × 10529 × 14561 × 32719 × 150053 × 563041 × 1379449 × 1424354653 × 6373576093<10> × 10725299405489<14> × 11637469336963<14> × 53256918961009<14> × 147667502589881<15> × 3274400525856244223<19> × 141682646883922306961<21> × 46266279097921483078651<23> × 25671002444875098778617582252548213<35> × 376625253722542687705967089659406933479650879094369030258305449<63> × 6673573209932823343535188105625591536422674379980039710739560694896247<70> × 657691252165510493074624994632492243498673308228545296980038834474336097170339517449163138480478010357544188164791431526046700863719160527514789<144> × 153640473367705026486025686824897160638427596188915005124857152011271157189240656365192594077784253164200688104738505100503750674646196584202785262563512520999980586262178029825128377882272551332589451040851528835937304408046168125919420211935239903955070400730616253678200585658896018897590919046241602862651452905362629121330848928853<336>

Index range: 644 – 644 << prev next >>