Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
73: | \[{10^{73}-1\over9}\] | 12171337159<11> × 1855193842151350117<19> × 49207341634646326934001739482502131487446637<44> |