Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 486: | \[{8^{486}-1\over7}\] | 37 × 19 × 73 × 163 × 487 × 1459 × 2593 × 71119 × 80191 × 87211 × 97687 × 135433 × 139483 × 262657 × 379081 × 97685839 × 227862073 × 272010961 × 3110690934667<13> × 16753783618801<14> × 192971705688577<15> × 3712990163251158343<19> × 10429407431911334611<20> × 918125051602568899753<21> × 216892513252489863991753<24> × 1102099161075964924744009<25> × 664728004346558283448724389870269691211809<42> × 393063301203384521164229656203691748263012766081190297429488962985651210769817<78> × 101213745778143742250901040788003424950068418098259161142719688891708905138274462262307761<90> |