Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 295: | \[{28^{295}-1\over27}\] | 1063 × 637421 × 1951721 × 88901201 × 159458711 × 11977934778301<14> × 87134177825869551823<20> × 459935144266993662991<21> × 9643579894368157824900039911930865360964315755820145323893317<61> × [3481904677072081133800600452727125843801695323474816293918304188235524025148815485064556787425388098304022762255966243275012087049267797026126458009481047748589019339567438250077013464810054034937069753998316550803204965745427442068664054110821026937732871154798978295833288337401<280>] |