Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 538: | \[{15^{538}-1\over14}\] | 24 × 37123 × 69403 × 36486623 × 41628289 × 23671064957<11> × 11946117035404861<17> × 13003648154503819<17> × 192892894685597006723957194070383<33> × [141861750230906767777305815225925824379743734322491048971947781836589459529437079978767254408626405628509614076313078268171051537312763371359755933458997599084187473411670592156227994604118130260617679518321328721808124373774129842404553883230618940105928248493419<264>] × 6188914711332592607748684032094836692611325235070702422091169282416847240077667003686324020131443878277108377627050113418625017616144159128010506920003203062046011491592511320091940476018401862347653549010628536645896060891470834725518772988783874381565654139099280557<268> |