Base 14 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 490: | \[{14^{490}-1\over13}\] | 3 × 52 × 11 × 71 × 101 × 491 × 3761 × 30871 × 50177 × 316051 × 2985431 × 7027567 × 8108731 × 39252431 × 1766644727 × 867158119717961<15> × 3997875795950412811<19> × 1153528236782084716841<22> × 2039227412722712854111<22> × 69130745718433525120121<23> × 2984619585279628795345143571<28> × 15032545982069748481056074884939451<35> × 776655233127914628990157017486935758151<39> × 55691808161414434292580585256766467712323<41> × 296436853200417446225166000757882806503798221113851<51> × 725872750446855550808183653411725818997931326184783765517743244666321<69> × 20747025426952573112733884107364848573545146198078322795365790661055513270050331935919763994919577298984725208118302880827972763920508911<137> |