Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 149: | \[{13^{149}-1\over12}\] | 2242046914771<13> × 352966551364986309076313220799500156990695900120836164600710363731246119260600746636506211204737084493561063538209816741316907553255428921122068261775711<153> |