Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 478: | \[{5^{478}-1\over4}\] | 2 × 3 × 479 × 17209 × 40093613041379<14> × 5729889967417247<16> × 1003240831021866550564937680732854800270693763847709<52> × 190709650350975600597511573537074759959866927496969840395008199081200941371758954231555682717703<96> × 1473534596915206322445556077174781171340308026061819537080103719298166168947549642538525464219037490151421698581086237756602026720817756235926209843391<151> |