Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
50: | \[{22^{50}-1\over21}\] | 23 × 101 × 154001 × 224071 × 245411 × 727351 × 62354037124651<14> × 705429635566498619547944801<27> |