Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 169: | \[{15^{169}-1\over14}\] | 53 × 677 × 157483 × 16655159 × 2266891303 × 2318610737675897213064413<25> × 829830140520440994398867075167864951172550269049626875159998833004731253937625926645722509525898668194234431393242308915643116370951124931720241767<147> |