Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 228: | \[{18^{228}-1\over17}\] | 52 × 73 × 13 × 192 × 229 × 307 × 457 × 6841 × 60497 × 269117 × 74792209 × 885730981 × 6261053129<10> × 55580803513<11> × 1288363483639<13> × 202438500542522921<18> × 6089884909802812423<19> × 1961870762757168078553<22> × 22295249525073672646621933<26> × 1135070056132121343004681823047441<34> × 1633867441076854816741224240423374163767714299<46> × 2190381241971342092151382442787626479254157549<46> |