Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 959: | \[2^{959}-1\] | 127 × 23017 × 531287 × 12959927 × 12966664479880063<17> × 32032215596496435569<20> × 5439042183600204290159<22> × 2054632332893489623648954529456932156446026648056013670075186364926667510962190769831<85> × 52156670649289427537576106760930840418958577841246744491905035295116406127549562586708559335511957913996603925996263107735771439<128> |