Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 354: | \[{4^{354}-1\over3}\] | 3 × 5 × 7 × 13 × 709 × 1181 × 2833 × 3541 × 12037 × 13099 × 31153 × 37171 × 157649 × 174877 × 179951 × 184081 × 5397793 × 5521693 × 94789873 × 1824726041 × 27989941729<11> × 104399276341<12> × 3203431780337<13> × 4453762543897<13> × 20847858316750657<17> × 1898685496465999273<19> × 9213624084535989031<19> × 2995240087117909078735942093<28> |