Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 869: | \[{4^{869}-1\over3}\] | 23 × 89 × 683 × 2687 × 15643 × 27809 × 140779 × 202029703 × 361592639 × 1113491139767<13> × 201487636602438195784363<24> × 239506881856626095535121<24> × 134125396891602037168327684988295528535837335675424728712327063077028670312366648778721<87> × 1160704203974521595750962766390778851551031896745990213832069535518477662100704891125326636191427578846473152505373261252994346440506603<136> × 36731710627728342866552138021938777226402784059107000502441998452078171980290184568488533379870560708887929721624739276585607332494596314146828057017496779052812081040459672546329591405967012062807529521<203> |