Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 587: | \[{4^{587}-1\over3}\] | 554129 × 2769467 × 2926783 × 39483330766889<14> × 13119770765051463547<20> × 73208283304744901303<20> × 3728298863422039632638351<25> × 58304599029582814346174509784805811323612591021863318902938306546239131<71> × 79700481573792089991933884278502015980406487362166583968208410611454698961420697<80> × 28981531265700436474908668605764037292283479533071482196860868875487797459833848867410473799526014756969233<107> |