Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 187: | \[{28^{187}-1\over27}\] | 6077039 × 50545507 × 32794810818428429<17> × 148020807352107352204781<24> × [103201406837460307666885231100032535177397479829854323554729907198542769861670025711943243603288222228087062669567284302956160494441140359350850147965477740844240458171431470963236881382334047000563311614363737156409<216>] |