Base 6 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 307: | \[{6^{307}-1\over5}\] | 1229 × 4762799 × 774471014077469888593<21> × 205898436168261867044624683<27> × 16725977588079472654632007986719318192091693593691651910297168472244131012342798613711715444184456507577149982196694009679352601584277471603217871377316597624322842794830157230918563<182> |