Base 16 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 239: | \[{16^{239}-1\over15}\] | 479 × 1913 × 5737 × 176383 × 340337 × 134000609 × 77852679293<11> × 32605142983704221670173899<26> × 26537037220992112785174856161239437662001<41> × 7110008717824458123105014279253754096863768062879<49> × 2269474963255693085711432948387582114817557263546457947501201<61> × 883423532389192164791648750371459256584513952652893606156996040365965313<72> |