Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 247: | \[2^{247}-1\] | 8191 × 15809 × 524287 × 6459570124697<13> × 402004106269663<15> × 1282816117617265060453496956212169<34> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 247: | \[2^{247}-1\] | 8191 × 15809 × 524287 × 6459570124697<13> × 402004106269663<15> × 1282816117617265060453496956212169<34> |