Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 225: | \[{15^{225}-1\over14}\] | 11 × 61 × 181 × 241 × 541 × 4931 × 20101 × 21061 × 46751 × 39225301 × 316091724098401<15> × 7112705843777290751<19> × 92978587355640205970336221<26> × 17402794883183351929087891501<29> × 7887666000162926233602695664525601<34> × 3104417290838849087397509493087712981201<40> × 55210601759089583738945554718806078801299867010132508907349335013201<68> |