Base 2 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 863: | \[2^{863}-1\] | 8258911 × 169382737 × 175642891399<12> × 2928599996670622068667271681045188567041998240666598148242087562523669795539013858277310234855201<97> × 85468029338908497730286448744320952733178896286236348934740505307540100440497651874613300623234192924024135752243773694455722478772486599<137> |