Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 663: | \[{5^{663}-1\over4}\] | 31 × 79 × 409 × 90271 × 317731 × 351391 × 305175781 × 466344409 × 1108661971 × 231452141519<12> × 654652168021<12> × 608459012088799<15> × 183276094190104631834639<24> × 1254903406902716811140301160259824557064339<43> × 1436003589550079403417985191612889433318011249<46> × 5954120723086877446689864001520990199500692430959<49> × 22620067717748831677757134436001037945765488525116049288293986699813367825780667125545103200581704540034062804802693245755842205494990637543642167515734111915357634337409861653817527756697308173553161307860637449025049<218> |