Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 144: | \[{13^{144}-1\over12}\] | 24 × 32 × 5 × 7 × 17 × 19 × 37 × 61 × 73 × 157 × 271 × 937 × 1009 × 3889 × 4177 × 14281 × 28393 × 181297 × 428041 × 680401 × 1471069 × 1609669 × 407865361 × 815702161 × 29975087953<11> × 659481276875569<15> × 6654909974864689<16> × 9818892432332713<16> × 558181416418089697<18> |