Base 14 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
81: | \[{14^{81}-1\over13}\] | 163 × 211 × 397 × 4861 × 18973 × 854582077 × 1427145211 × 299113818931<12> × 114880659731339946558533643832442036970911052211<48> |