Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 159: | \[{31^{159}-1\over30}\] | 3 × 331 × 3499 × 218149 × 2210276655188599<16> × 131870338724373546822946177<27> × 1593405992841712852324481273<28> × 478103814896755465120707905491<30> × 3561723000085796683039939504456245151097965263319<49> × 74411334441595912365847960431041785916549288596884824521870662692917145859253<77> |