Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 863: | \[{4^{863}-1\over3}\] | 8258911 × 169382737 × 175642891399<12> × 535070645969<12> × 176177196937327118084628312251<30> × 605471410378222574753949751873375051<36> × 1020169266060477773800580920702507013464523497<46> × 2928599996670622068667271681045188567041998240666598148242087562523669795539013858277310234855201<97> × 85468029338908497730286448744320952733178896286236348934740505307540100440497651874613300623234192924024135752243773694455722478772486599<137> × 352077526476890450684125035711744227122269802879438074588301733118706059918501888392452908002766823421365707320772023020600718381992529771<138> |