Base 14 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
66: | \[{14^{66}-1\over13}\] | 32 × 5 × 23 × 61 × 67 × 211 × 4027 × 1154539 × 424262851 × 11737870057<11> × 211217884795501<15> × 77720275181800334933851<23> |