Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
253: | \[{8^{253}-1\over7}\] | 232 × 47 × 89 × 178481 × 599479 × 1633369 × 46025761 × 4103188409 × 10052678938039<14> × 199957736328435366769577<24> × 44667711762797798403039426178361<32> × 66060018768078882068514915840314543857274440609237251168154401305136486254148474475678359078435292711536864866655643519<119> |