Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 265: | \[{28^{265}-1\over27}\] | 168541 × 637421 × 220187971 × 25924926374866811<17> × 8418181933268901359893212846689066832649574728174313094689465758991<67> × [2252439730268191675281509934167648246121115443714907572662714558253808453302831028926725490434713600473834058383008913965402873392952568573104765544966571960059170805990557140369286048029064280989829043040676606312585806695725473706856929746888341214656122278291735150933371166891<280>] |