Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 246: | \[{8^{246}-1\over7}\] | 33 × 19 × 73 × 83 × 739 × 13367 × 18451 × 165313 × 174907 × 3887047 × 164511353 × 8831418697<10> × 26309368807003<14> × 6376386802464073<16> × 13194317913029593<17> × 177722253954175633<18> × 23365041083799063007245010292408927930007906086731<50> × 242930150369581725249341464475421249205592384370695685937<57> |