Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
82: | \[{13^{82}-1\over12}\] | 2 × 7 × 83 × 638453 × 6740847065723<13> × 140299545168523469<18> × 45111380897407574171<20> × 58047259977349384372529747126587<32> |