Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
125: | \[{15^{125}-1\over14}\] | 11 × 251 × 4931 × 46751 × 7112705843777290751<19> × 2718938036486102674173251<25> × 5957346676587042681973111523596421999420361763994295377295742004155127441032747687666014001<91> |