Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 195: | \[2^{195}-1\] | 7 × 31 × 79 × 151 × 8191 × 121369 × 145295143558111<15> × 134304196845099262572814573351<30> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 195: | \[2^{195}-1\] | 7 × 31 × 79 × 151 × 8191 × 121369 × 145295143558111<15> × 134304196845099262572814573351<30> |