Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 283: | \[{8^{283}-1\over7}\] | 9623 × 18679 × 147727 × 68492481833<11> × 353712117583777<15> × 29940168528270618887118001<26> × 23579543011798993222850893929565870383844167873851502677311057483194673<71> × 1180760527724987440933938277330997607446702472478168408717286286262591667681315716737061008644889015639927997281559028479<121> |