Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 427: | \[{15^{427}-1\over14}\] | 7 × 367 × 7321 × 55511 × 1743463 × 3129911 × 105100927 × 158493698700493801<18> × 220692472927167836907173<24> × 116090686203818440503800083<27> × 66437728342254817921459404330630159646331<41> × 6863775567891412849200072583733308913166669666452258760759936488631848788730880575366199869919176637601911581117134808260389564781870055436564207278112029070020650938999022529760542712634020645229513989720745122538827098552643130239564264797141935775556684165646896923748817098816573510703585353484148159863926125897269147153723610395120716867617380705190184301<361> |