Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 153: | \[{13^{153}-1\over12}\] | 32 × 61 × 103 × 443 × 919 × 554167 × 763879 × 1609669 × 326881441 × 1814824801 × 15798461357509<14> × 1981729131748453<16> × 535301324317729848039542278039<30> × 144923450429231394968623586477110194336950650118657448576712963069<66> |