Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 577: | \[{4^{577}-1\over3}\] | 3463 × 75011 × 2796392419 × 132305774316967<15> × 19564699409833266851<20> × 40178155219546467805860689115373148252663044401541473320606938794406170369832084325416809768171792935628567346566096749280321487002073689649<140> × 1079633141772892852450713464662329764119217100464362618290526362027911012565069142996396993157133020422681868025602819574600599624729277860300320636162145551<157> |