Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 196: | \[{19^{196}-1\over18}\] | 23 × 5 × 29 × 181 × 197 × 701 × 5237 × 70841 × 226871 × 167291881 × 14533200697<11> × 51326794793<11> × 1951582844417508467257<22> × 59406262713432872236099181572519757<35> × 510095203167924318152120324312866078462380276415979467<54> × 133326196026675644019930302418302068328069937678910781597112458195347971374293533726673<87> |