Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 387: | \[{28^{387}-1\over27}\] | 32 × 192 × 271 × 1549 × 3613 × 30187 × 56503 × 60029 × 444979 × 575857 × 684217 × 44447209 × 105942074311<12> × 23321405465263<14> × 17068111104046291434149<23> × 131886358557433485918553<24> × 1709917733284391730017137<25> × 164657088579005200672613311<27> × 32061001271444759131207297109391925612749084897555244249<56> × [21060546255517554096662088548843736723798086652903229656457502328342883832190578523066084867533444016854764931938132195975350246439992388185000635335218617683880528358645194874850570722790780069176990024651076312534105705098631145722378938103103693619027907755721883072381190929266821387889051838570495157310568507801813939215616107<332>] |