Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 273: | \[{8^{273}-1\over7}\] | 7 × 73 × 79 × 127 × 337 × 911 × 937 × 6553 × 8191 × 86113 × 92737 × 121369 × 649657 × 108749551 × 112901153 × 7830118297<10> × 23140471537<11> × 2681001528674743<16> × 4093204977277417<16> × 86977595801949844993<20> × 219516331727145697249308031<27> × 21494973179303913190133458460563964459380529075838941297352657742148160962406273546512257<89> |