Base 11 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 219: | \[{11^{219}-1\over10}\] | 7 × 19 × 439 × 4072194187 × 514949924967851751873479083936952760941875001182553509<54> × 1051153199500053598403188407217590190707671147285551702341089650185945215953<76> × 902448428618984484351485335555111456708987552084640908992812764343479477200128280433<84> |