Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 305: | \[{13^{305}-1\over12}\] | 2441 × 4027 × 4759 × 7687 × 18301 × 27817 × 30941 × 92110001 × 4672993939<10> × 48401662036451<14> × 87103671046409436847<20> × 292485170282911046438142739144651<33> × [156854566006649852599356782324622867152324699460485902924688686804146691731217133552418660855073540648603126903395840378141691273449999826381342554797078357412325171448787064635495950383326977244596445335788130018652385683143111<228>] |