Base 14 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
87: | \[{14^{87}-1\over13}\] | 211 × 349 × 13109 × 100577221 × 25581350023<11> × 396530555859061913<18> × 403476788531724813009371807907132693704496994384144939<54> |