Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 426: | \[{7^{426}-1\over6}\] | 23 × 3 × 19 × 43 × 968299 × 582053568181<12> × 990643452963163<15> × 1351405472411521<16> × 2358779222910769<16> × 5163412518685933<16> × 1886450423022355815248392428881107832527<40> × 92914860840816888117372433724419584467881183<44> × 169002145064468556765676975247413756542145739<45> × 1274759667849259732505774376326193816317726317<46> × 1021371448092530103371246859310915844133461580331<49> × 24640304627535595210208716854848978157699652842397850563<56> |