Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 303: | \[{8^{303}-1\over7}\] | 73 × 607 × 7432339208719<13> × 341117531003194129<18> × 1512768222413735255864403005264105839324374778520631853993<58> × 3637931457649089717051974017482661831024610395390629610955096836989065478498987963966866454094670282809870594976312548149976917222439736562085616362635853024752959363347811766891001<181> |