Base 14 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
77: | \[{14^{77}-1\over13}\] | 67 × 3851 × 4027 × 59753 × 140449 × 1154539 × 8108731 × 53380217213346395075243<23> × 315257364155953014892026218048531<33> |