Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
137: | \[{31^{137}-1\over30}\] | 3217167713 × 43325612951<11> × 495692540493792952706077453053647490587885369144466989959081447830613985960708823137620141312048806228910421246405695046310038091108947098309520680800772873100045155414821401043012359<183> |