Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 839: | \[2^{839}-1\] | 26849 × 138561000316919<15> × 377801626929390823<18> × 113910681722635191781067775764311<33> × 22896492725473729252775049721372386001517616720738640677702244640115992881686954509887884498034915413780013699315805090463370326763073567630359469495994773510181155342534075910698453209<185> |