Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 428: | \[{13^{428}-1\over12}\] | 22 × 5 × 7 × 17 × 857 × 2141 × 21401 × 6053633 × 116077045829<12> × 791958624719<12> × 18470838679921<14> × 2458739964418553<16> × 3286126349184953<16> × 802613681098842683578733029560442634624676055698002425620291961<63> × 149193988166389766470615356539799076072712267621082921891755718516793<69> × 1427435475856914818544458415340642448855416597543901294316482822199809<70> × 19968513360169668964438813128424526105976814973239628283106722206580247180654148334428039<89> × 1842708018885404721657218228344276394838382971121554990878798778219059086476647798269311913985066291<100> |