Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 366: | \[{4^{366}-1\over3}\] | 3 × 5 × 7 × 13 × 367 × 733 × 1709 × 55633 × 3456749 × 5080081 × 368140581013<12> × 667055378149<12> × 4209508589941<13> × 12836737570021<14> × 19125556519918081<17> × 768614336404564651<18> × 2305843009213693951<19> × 414194958733796530899181<24> × 37201708625305146303973352041<29> × 1772303994379887829769795077302561451<37> |