Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 147: | \[{15^{147}-1\over14}\] | 72 × 43 × 241 × 8527 × 1743463 × 5706541 × 10164071 × 34953661 × 2764834801 × 2817034275427<13> × 4175288799599<13> × 14675999570738648605387<23> × 3282154659041887520290410523<28> × 228848777235834187287069221085362591044067914515121<51> |