Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
109: | \[{22^{109}-1\over21}\] | 26641127 × 1537229399 × 245223248016309456025038176215323623349852104072689379500454378848798255681616151822639298987352425471439721325983589750952751427<129> |