Base 26 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
50: | \[{26^{50}-1\over25}\] | 33 × 52 × 11 × 151 × 431 × 1021 × 8641 × 317701 × 2906801 × 14346244151<11> × 4315817869647001<16> × 9199235946217201<16> |