Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 197: | \[{19^{197}-1\over18}\] | 48463 × 976727 × 121291036381<12> × 203633207302960700675574949<27> × 1558657985408498699711044341721756687<37> × 2392056046482654802114575786588503659<37> × 2651770018420067024925422219625855484998389152393<49> × 3947008394729105680180170920241373401687167463261640179210101886241166279072140981<82> |