Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 280: | \[{19^{280}-1\over18}\] | 24 × 52 × 11 × 17 × 29 × 41 × 71 × 151 × 181 × 197 × 281 × 421 × 701 × 911 × 2251 × 3833 × 5237 × 70841 × 226871 × 116895941 × 478382041 × 691551841 × 14533200697<11> × 14706033761<11> × 16936647121<11> × 16429010813881<14> × 41921106691107421<17> × 65365284260571112024359304391<29> × 4898725341275828472027787456561<31> × 5156590470591163710974829741361<31> × 11664334029383165605131371010993341<35> × 180387544473837666808884776779852208399002738605865560401031169362047880914993423453326861039305041<99> |