Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 299: | \[{18^{299}-1\over17}\] | 47 × 79 × 521 × 599 × 7468009 × 315973633 × 29759719289<11> × 20801237997245359<17> × 28541444387698422623<20> × 89601319956305801065531721561<29> × [28818844581459468735440290766929534408908490622509698800099342146338430529471740842144591936508826164812805891721994745420938341272214375759260568193329209009653709065794080491397357674414067183121982652766095305405076679136107672804514186627513706820600944718132202484108249<275>] |