Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
111: | \[{13^{111}-1\over12}\] | 3 × 61 × 1481 × 67495678093<11> × 4287755796749<13> × 31964044249933<14> × 5897148699869174859194378551<28> × 25044646268853061600986562366030606612720224127987831<53> |