Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 272: | \[{13^{272}-1\over12}\] | 24 × 5 × 7 × 172 × 103 × 137 × 409 × 443 × 1021 × 14281 × 897329 × 61165661 × 63104137 × 75094577 × 407865361 × 6152936617<10> × 15798461357509<14> × 617886851384381281<18> × 2101969584130840266612144288141743329<37> × 17915834850330581667260806159243454369619165933658481<53> × 1020670627305629569207605658306087491807635292104851889<55> × 55444393239496164406865681531894115168657269299195964355161<59> |