Base 11 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 63: | \[{11^{63}-1\over10}\] | 72 × 19 × 43 × 127 × 1723 × 8317 × 8527 × 27763 × 45319 × 867259 × 1772893 × 106431697 × 316825425410373433<18> |