Base 14 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 75: | \[{14^{75}-1\over13}\] | 11 × 31 × 211 × 1051 × 2851 × 3761 × 15511 × 110256001 × 758855846709601<15> × 6660669790484818762043927493730359492577651<43> |