Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 949: | \[2^{949}-1\] | 439 × 8191 × 22777 × 2298041 × 78341849 × 9361973132609<13> × 427960745238703<15> × 705900082312653909721<21> × 377725045152842556276329<24> × 33983040640336090041816253930273656135559781521<47> × 11691129793881963345866374419578692641974339987635890961623815193719<68> × 760339005026120346125923699971092043149237657811597446455242865775788365239<75> |