Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 840: | \[{18^{840}-1\over17}\] | 53 × 74 × 11 × 13 × 19 × 29 × 31 × 41 × 43 × 61 × 71 × 113 × 211 × 229 × 241 × 281 × 307 × 337 × 421 × 449 × 457 × 601 × 881 × 929 × 1373 × 2521 × 2711 × 2801 × 3361 × 3697 × 9041 × 15101 × 15121 × 16921 × 17837 × 26881 × 46747 × 47251 × 80207 × 117251 × 145501 × 153133 × 558721 × 1623833 × 3052211 × 4179001 × 4274201 × 31714369 × 32222107 × 50451031 × 607371619 × 3493264321 × 4476462481<10> × 7804804801<10> × 11019855601<11> × 11630180251<11> × 14044784041<11> × 22576710941<11> × 495520919281<12> × 6601276054801<13> × 156107192084257<15> × 820207420126249<15> × 947051449771981<15> × 6391293850256281<16> × 29420891411500261<17> × 129791611978425601<18> × 137841514501966721<18> × 472787139819941941<18> × 33421946175915890041<20> × 129495438280295715181<21> × 4164889456901862302881<22> × 31688031645803109827461<23> × 123493831186918813797388081<27> × 361981632928757554946658433<27> × 3436233498896810902837947821<28> × 65081321032032689150122343401<29> × 18862722298358934616239133165104940081<38> × 35913922125899877885047899653036238637165472882833270401<56> × 1790953796800843234116097529606767386535325165023808726403601<61> × 485888625348888473631868038151981373135440320080988916620935197249719166188919306848766474533028222553222401<108> × 4202094795521743852511453743929147330770047756682821832417707561370373732925654829564092557282490032247378780244686725708048276095600650057476581917594380630056514836668407430031576349121<187> |