Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 403: | \[{5^{403}-1\over4}\] | 1861 × 1892489 × 305175781 × 688730186119<12> × 625552508473588471<18> × 311447631608357947354270996859<30> × 5031770563367301370277089549186021905732092831<46> × 3289738876326055626218496122253460916812420650821714159179769278548188108251<76> × 50692274351165075296529758515617402544053669424430715143598748112190442477479524889<83> |