Base 32 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
43: | \[{32^{43}-1\over31}\] | 431 × 1721 × 9719 × 2099863 × 731516431 × 514851898711<12> × 297927289744047764444862191<27> |