Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 256: | \[{17^{256}-1\over16}\] | 28 × 32 × 5 × 29 × 257 × 769 × 1409 × 3329 × 18913 × 41761 × 138497 × 165569 × 184417 × 544513 × 1801601 × 52548582913<11> × 5075110114734021328723863149761<31> × 26322932283994956204030979644111775026565819806572087391187777778930177<71> × 8671812774007241324966862078108672177470731053732485043182409242964094874718332277054480320901935880190695916862695684368058690437005816024222697473<148> |