Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 155: | \[{10^{155}-1\over9}\] | 41 × 271 × 311 × 2791 × 6943319 × 9294566806081<13> × 57336415063790604359<20> × 311356050778390853515194982157798457569542012969741683230780943655658473371697366138417141225623774416801<105> |