Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 398: | \[{8^{398}-1\over7}\] | 32 × 5066143 × 164504919713<12> × 1445406523039<13> × 5153543358319177<16> × 1616721141393989482351447740066663923511303121<46> × 4884164093883941177660049098586324302977543600799<49> × 25827119250999351443374505513011778112393876592372931367907<59> × 267823007376498379256993682056860433753700498963798805883563<60> × 12594263620775680997944097572742389790271497163187368770416979751640789800959731481964821194789929847<101> |