Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 697: | \[2^{697}-1\] | 13367 × 16729 × 131071 × 164511353 × 136364260462350955061807337963242197493167687688479364067250955475008708422731598707787831617704017498828261921599586128766571055323409303455188555673114202934877515988195740967406991575319<189> |