Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 939: | \[2^{939}-1\] | 7 × 1879 × 10960009 × 995114641 × 147859967407<12> × 14787970697180273<17> × 3857194764289141165278097<25> × 26693012026551688286164949958620483258358551879<47> × 20155798822017245111102019714324599882897299149847<50> × 7138857753733304138653757923863143665599755157337724903248921802286130665523137125162231637957328083985803371018521<115> |