Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 847: | \[2^{847}-1\] | 23 × 89 × 127 × 727 × 581283643249112959<18> × 42262784685026262370553<23> × 1786393878363164227858270210279<31> × 113142799252453400220392999832423508498728340683265893942884779891405154616489685946541744845361233716750436338418830063524491880812827227290596039580920461575454031931161719113<177> |