Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
161: | \[{19^{161}-1\over18}\] | 277 × 701 × 2347 × 5153 × 70841 × 1534005103 × 16497763013<11> × 1335495402823<13> × 1060687809169199<16> × 705536857239474702622569518622494527098924182414013693100705858277277654501809759561002790667632383139525147985686862443026270012991534667241<141> |