Base 14 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
54: | \[{14^{54}-1\over13}\] | 34 × 5 × 19 × 61 × 211 × 397 × 18973 × 132049 × 1177426963 × 1427145211 × 120850766857<12> × 299113818931<12> |