Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 113: | \[{28^{113}-1\over27}\] | 227 × 80802233 × 68240870391326438539013755784212436485874641626523595423711463930695961173063562533807774197709197400368627644128902600382685846913933825662940743184871<152> |