Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 413: | \[{5^{413}-1\over4}\] | 19531 × 21180247636732981<17> × 2047572230657338751575051<25> × 1677756178117368440322458992363311946171<40> × 831626286333277526831588645145284546199351046790275052059242019686384065686391053295797792172402745609218984159923805324701783992565462392410617996981807884819142728559098593265467386103825509076351505451<204> |