Base 11 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 197: | \[{11^{197}-1\over10}\] | 3012710549939<13> × 1060717191208815311<19> × 5407146368827614877351<22> × 616346818465450400938401858863608277357<39> × 133970345042729450695745865074506973302248503815317512989341926078740522219007188039437342077408621022948333639719<114> |