Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 121: | \[{10^{121}-1\over9}\] | 15973 × 21649 × 38237 × 274187 × 513239 × 597149176209530412360795391497657340159943421992502538230831481682232969649167277637825641074323<96> |