Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 184: | \[{20^{184}-1\over19}\] | 3 × 7 × 47 × 401 × 461 × 691 × 1381 × 4049 × 5521 × 160001 × 563041 × 6373576093<10> × 42330951497<11> × 299080459889<12> × 10725299405489<14> × 3274400525856244223<19> × 46266279097921483078651<23> × 25671002444875098778617582252548213<35> × 10935164231445053840998990339773415186285242084291946509291337871715864218885739226793<86> |