Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 219: | \[{19^{219}-1\over18}\] | 3 × 127 × 439 × 893943109 × 109796425517837<15> × 1820991647568457531<19> × 4697236736619422293<19> × 1118880531246649109948959<25> × 391818505243975817655620850033223<33> × 3226690707486553756833988409595477959<37> × 3116751114878043610615186224570819717129490224467399003380296142754069845243150514348516155401514655524677997898883374767<121> |