Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 345: | \[{8^{345}-1\over7}\] | 31 × 47 × 73 × 151 × 631 × 14951 × 23311 × 79903 × 178481 × 4036961 × 634569679 × 2232578641663<13> × 10052678938039<14> × 42166482463639<14> × 2646507710984041<16> × 19616702141919323129388715950912065791<38> × 162383614111595675973306320509614573241829932932497191<54> × 647463932206559821122945033207524451183068970139360141681<57> × 78908859162754190695012872157796443289838408940766478547763623591<65> |