Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 425: | \[{7^{425}-1\over6}\] | 1531 × 2551 × 2801 × 4931 × 14009 × 2767631689 × 31280679788951<14> × 6269759010776190508301<22> × 6175607140671472910167602851<28> × 138497973518827432485604572537024087153816681041<48> × 4237224436988202702160767137463147979893704350812067297420838533369371872259275469075313496785324410332613451<109> × 16456405735882180568969507011978043354522856475860351869545386665769974239284032451213702510068769327884306736901<113> |