Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
172: | \[{10^{172}-1\over9}\] | 11 × 101 × 173 × 338669 × 1527791 × 57009401 × 2182600451 × 1963506722254397<16> × 2140992015395526641<19> × 7306116556571817748755241<25> × 2923500556298303355222653948542706598448925085853709961673200056984872843366529<79> |