Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 150: | \[{15^{150}-1\over14}\] | 24 × 11 × 31 × 61 × 151 × 211 × 241 × 1531 × 4931 × 19231 × 20101 × 44101 × 46751 × 142111 × 712651 × 2080801 × 5062201 × 9555151 × 39225301 × 316091724098401<15> × 34800625873379851<17> × 7112705843777290751<19> × 2211967376723264172601<22> × 17402794883183351929087891501<29> |