Base 9 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 520: | \[{9^{520}-1\over8}\] | 23 × 52 × 112 × 17 × 41 × 53 × 61 × 131 × 193 × 521 × 1181 × 1249 × 13729 × 14401 × 398581 × 797161 × 3701101 × 42521761 × 475356961 × 2093124281 × 4795973261<10> × 10080658121<11> × 128653413121<12> × 37644053098601<14> × 82669546937641<14> × 110133112994711<15> × 1037093029970883601<19> × 105919308797935444986721<24> × 901949427723250036534561<24> × 121848815628062263103880401<27> × 780464337846444296785447886881<30> × 10462398853448190277892819673521<32> × 85515537811724373585467087637721<32> × 125866583264034588195744509082241<33> × 8342250511483542640541811608704672321<37> × 8122589491866480893725693444173991689595601<43> × 1257680907151393528474695843497039619973947939020081<52> |