Base 14 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 121: | \[{14^{121}-1\over13}\] | 67 × 4027 × 1154539 × 123299243 × 831510853163<12> × 2879003390005532849687<22> × 810996712531202185567281370471<30> × 4954437135293358288107852897538715087461517527521910857<55> |