Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 323: | \[{13^{323}-1\over12}\] | 103 × 443 × 647 × 2039423 × 12865927 × 80498707 × 9468940004449<13> × 15798461357509<14> × 8052014104462879077748211<25> × [706022160819220557056494421430698997833464300520920953631380038990160422784688036197414741625848077473327050980035588710772354721628772108672012469605817021530718841091975301013438885340781432650843182600988405475420567487000702449285766241228950500509341656234397999170792474753<279>] |