Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
77: | \[{10^{77}-1\over9}\] | 239 × 4649 × 5237 × 21649 × 42043 × 513239 × 29920507 × 136614668576002329371496447555915740910181043<45> |