Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 418: | \[{8^{418}-1\over7}\] | 32 × 23 × 67 × 89 × 419 × 571 × 683 × 11287 × 20857 × 32377 × 174763 × 524287 × 599479 × 1212847 × 12471031 × 160465489 × 89856878697433<14> × 94803416684681<14> × 1512348937147247<16> × 3410623284654639440707<22> × 5346950541323960232319657<25> × 1607792018780394024095514317003<31> × 52711923798002218687534164008761<32> × 8778523027466598416204656058467252273<37> × 97816902852991765949068317084025791019<38> × 341782452940154906609821749692729569489<39> × 36997287511549004440599388408744754230660993087<47> |