Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 359: | \[{3^{359}-1\over2}\] | 719 × 169998846011<12> × 470920899227107034926837<24> × 41996290825582863451929997<26> × 278252468335029499500820080150443<33> × 1437896611363489877849724341543860557234393332468973900031646987070297660131<76> |