Base 14 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 86: | \[{14^{86}-1\over13}\] | 3 × 5 × 173 × 68138548314176704687<20> × 18794094160316772254370452929<29> × 8541144684063565933692773061041272523162742407<46> |