Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 847: | \[{4^{847}-1\over3}\] | 23 × 43 × 89 × 127 × 617 × 683 × 727 × 78233 × 117371 × 35532364099<11> × 581283643249112959<18> × 42262784685026262370553<23> × 59359043484951383441635753<26> × 11054184582797800455736061107<29> × 1786393878363164227858270210279<31> × 1629399896606002450068005313617654570814500081<46> × 49487391870019531099615607617192131524151336784454863020647486531808634317174979062941458094254953215767950774899645727542710313<128> × 113142799252453400220392999832423508498728340683265893942884779891405154616489685946541744845361233716750436338418830063524491880812827227290596039580920461575454031931161719113<177> |