Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 352: | \[2^{352}-1\] | 3 × 5 × 17 × 23 × 89 × 257 × 353 × 397 × 683 × 2113 × 65537 × 229153 × 5304641 × 119782433 × 2931542417 × 43872038849<11> × 275509565477848842604777623828011666349761<42> |