Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 663: | \[{3^{663}-1\over2}\] | 132 × 313 × 443 × 1871 × 6553 × 7333 × 12853 × 34511 × 797161 × 99810171997<11> × 186130617349<12> × 60923689584342791398642907184808386306560206807547243570697195224906504237067588551869427<89> × 12718753829259219755982051504674258570381083616175590954963931438900703032461697555621844918758809597070239959331566666243451152334170934170105172334375381125472201701585869<173> |