Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 154: | \[{15^{154}-1\over14}\] | 24 × 7 × 23 × 67 × 463 × 2333 × 4159 × 5237 × 8537 × 1743463 × 10678711 × 23504771357<11> × 28095816025663<14> × 96821654187863868183691<23> × 97396386804396874728813793725029578905625789<44> × 233231979450578549516941109533238047237736577451339331<54> |