Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 545: | \[{4^{545}-1\over3}\] | 11 × 31 × 1091 × 3271 × 213641 × 104124649 × 745988807 × 18109412991311<14> × 2511696210834096991<19> × 861926610031728629577011<24> × 870035986098720987332873<24> × 2077756847362348863128179<25> × 7647513170903349335637401<25> × 23548299583428753078153276336578257655370097978102396602253308281<65> × 17154986671631424401083333566864958769923530277214067752411345828989243831953969896446066369938959754331<104> |