Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 412: | \[{4^{412}-1\over3}\] | 5 × 17 × 41201 × 454849 × 667441 × 17325013 × 40151873 × 520379897 × 2550183799 × 415141630193<12> × 52317884766401<14> × 142500609730433<15> × 473000157711296729<18> × 8142767081771726171<19> × 3976656429941438590393<22> × 117070097457656623005977<24> × 6846308393020964165241534187187578280122560160805821004078877538585253503361<76> |