Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 653: | 78557207 × 289837969 × 16008527538753578495897<23> × 3044938125828889184039273431<28> × 3786707123184812723340717607<28> × 8893122618977158614989714180722964331426004820169213558574794542353622623988934429093001259164784553073<103> |