Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 645: | \[{15^{645}-1\over14}\] | 11 × 61 × 241 × 431 × 1549 × 4931 × 39225301 × 2598709747334161<16> × 1428108856387270201<19> × 1833802200566194141<19> × 4814957964951736081<19> × 3109274247465857390281<22> × 4975400197345478916839425015315256265857101<43> × 26656068987980386414408582952871386493955339704241<50> × 2596855758588151053898863550500681735472021353969461351<55> × 7272282873616636486248750610008322442226145351765444154226961<61> × 119983296159419386406934525940047822661513129865720754215156469557046614269<75> × [42362141587589192396998605647403390839881471257543091518690588288594448874356022034358027453518335791622250908805619333862663767289228501618645491482928499712950208668916578034236306105120675633655394942376550881883111173142669786234934699864854861465156781347410984547161245959968433376293737160052874254672938426516532030433776758818908608107324051360820505081<362>] |