Base 11 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 155: | \[{11^{155}-1\over10}\] | 5 × 3221 × 50159 × 2428541 × 112582632731<12> × 21008012759943211<17> × 12981042678412809421<20> × 157571957584602258799<21> × 2745151262420851793033973005637809333314694792055057326551469616066465289853741<79> |