Base 16 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 190: | \[{16^{190}-1\over15}\] | 5 × 11 × 17 × 31 × 41 × 191 × 229 × 457 × 761 × 1217 × 2281 × 54721 × 61681 × 148961 × 174763 × 524287 × 525313 × 420778751 × 30327152671<11> × 24517014940753<14> × 276696631250953741<18> × 2416923620660807201<19> × 3011347479614249131<19> × 3435950210316335724157758000789490561<37> × 153787279330237476887106331233239525756635010497681<51> |