Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 374: | \[{28^{374}-1\over27}\] | 232 × 29 × 239 × 613 × 2347 × 8807 × 6077039 × 50545507 × 45508138747<11> × 84928880807<11> × 540610746853<12> × 32794810818428429<17> × 148020807352107352204781<24> × 2702675345346723698638171<25> × [15837101511451811236281156920285004673553420759977729980312075662174494804808976914686201460976430805839146900369776765793506302094812163216643605856414552389862022514721586693618403084246845711553<197>] × [103201406837460307666885231100032535177397479829854323554729907198542769861670025711943243603288222228087062669567284302956160494441140359350850147965477740844240458171431470963236881382334047000563311614363737156409<216>] |