Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 384: | \[{18^{384}-1\over17}\] | 52 × 73 × 13 × 19 × 97 × 113 × 193 × 229 × 257 × 307 × 457 × 769 × 929 × 1153 × 254209 × 475777 × 2474209 × 20479489 × 113607841 × 274516993 × 3930785153 × 11019855601<11> × 11434008961<11> × 30894471809<11> × 41448704449<11> × 42569092513<11> × 1942245618327159091654657<25> × 1843537150504780075063108993<28> × 121934274199167596917341199489<30> × 2650133387965577743576091197441<31> × 26145974402455231434413347721857<32> × 131126070859614425948166105749761<33> × 1100476729530700649095762818795195992676563199854864336075520626038066183169<76> × 9069186625842555196938469352031756305566088565427106476555749174691480382298323171666001659279617<97> |