Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 62: | \[{31^{62}-1\over30}\] | 25 × 373 × 1613 × 62869 × 145577 × 35789156484227<14> × 2706690202468649<16> × 568972471024107865287021434301977158534824481<45> |