Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 655: | \[{8^{655}-1\over7}\] | 31 × 151 × 263 × 597361 × 813511 × 36093121 × 51118297 × 58352641 × 267786271 × 1418988691511161<16> × 2576754528566814601<19> × 351182936972570824983481<24> × 10350794431055162386718619237468234569<38> × 15333541100090824437129533485272856744656791<44> × 9833304614455302578430964280893955512223415028355534287<55> × 213732345927036277063342078342573605826938066316475164889831797001<66> × [64614179949318012871479477353897057426400069695569434170375452374183676087042163826091930385753063206162790047774504162760342908091077652587341786208290798944746219313609706142395323074823083111379423973191757363224974218626535533694904310511765025878865640303263903615333813526396791<284>] |