Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 639: | \[{7^{639}-1\over6}\] | 32 × 19 × 37 × 1063 × 1279 × 7669 × 968299 × 582053568181<12> × 990643452963163<15> × 624294552685280251549971698056822864771<39> × 169002145064468556765676975247413756542145739<45> × 1274759667849259732505774376326193816317726317<46> × 24640304627535595210208716854848978157699652842397850563<56> × [1422033982914306072028846293109149132456862492261913452583447964001501692662710742916714297339983425111474227308824835160483630041263347402623019831242313511937911028993282819139428451657316712017357097493582081976520723723748154022806419979960366209949688602999944941807171650761267901189799376160842533284369<310>] |