Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 188: | \[{8^{188}-1\over7}\] | 32 × 5 × 13 × 283 × 1129 × 2351 × 3761 × 4513 × 5641 × 1681003 × 1768141 × 13264529 × 54865357 × 4375578271<10> × 7484047069<10> × 35273039401<11> × 111349165273<12> × 165768537521<12> × 180846660913<12> × 140737471578113<15> × 646675035253258729<18> × 270097268484167653999069<24> |