Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 393: | \[{18^{393}-1\over17}\] | 73 × 263 × 734911 × 1907623 × 4937129 × 11349841 × 583611289 × 83265325271<11> × 5429089043897<13> × 83076308471615737<17> × 1374184057220901337<19> × 60448935027926938217551<23> × 59305632978486649450720615586460322077911114394209<50> × 798745172959415696032317403216661106058706840191203912192586967699963207<72> × [2020572284608541447324520208357992727103030767801921301035327512120879310087937328454082944317128120253163762166185117473493634035382622246978950187626753106831839839649094294388585786159411321847728840137266580624456580734752884109663686925548072177<250>] |