Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 257: | \[2^{257}-1\] | 535006138814359<15> × 1155685395246619182673033<25> × 374550598501810936581776630096313181393<39> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 257: | \[2^{257}-1\] | 535006138814359<15> × 1155685395246619182673033<25> × 374550598501810936581776630096313181393<39> |