Base 30 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 53: | \[{30^{53}-1\over29}\] | 107 × 28027943525891113319<20> × 92062209914431198469<20> × 242087349218186440393375692328699403<36> |