Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 709: | \[{4^{709}-1\over3}\] | 340321 × 216868921 × 5045586197318561<16> × 1391646221255097953<19> × 1829040306801321759939909767617476342912326200121<49> × 285839350410284351941588380267693812631166258995825465814552263265276736767979551874964500526866985214814286609216243961894089704553236781434371<144> × 8923613716343045335466356955530999435422162663462596131888032215488375825848018829047564287845002013075724298352985234932029074583858040431943816370013577608497700099852955833804395145047<187> |