Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 615: | \[{13^{615}-1\over12}\] | 3 × 61 × 1231 × 3691 × 4651 × 15991 × 19681 × 30941 × 161971 × 178351 × 1340947 × 6740847065723<13> × 1374332707191583<16> × 763604898951326591407<21> × 34241383511160276465403<23> × 2500231913819762291766481<25> × 143207110374732650171977021<27> × 58047259977349384372529747126587<32> × 24143973887756644044975508681287099753749106936434931077112556939919141306344436936664679611056193043460108134516840527516887040276572835674390161<146> × [5587758402178712945059464401228222951272829643265733579700436130060748084486010426871173099306850272265790189640039059660652520500902393267660703145745895246429961777398556269047013463793440014704276268305151530674354495171976597329503023724597535838342042908459555786283137203663458840487489838082977959559433562003573152478437406417360281481<343>] |