Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 469: | \[{4^{469}-1\over3}\] | 43 × 127 × 7327657 × 193707721 × 408335956841<12> × 761838257287<12> × 6713103182899<13> × 70321958644800017<17> × 1839633098314450447<19> × 362312427317443674457<21> × 76207764956885795275897986139<29> × 21305401445202124537563847733843096783112730151372946821753<59> × 628683935022908831926019116410056880219316806841500141982334538232031397827230330241<84> |