Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
173: | \[{10^{173}-1\over9}\] | 347 × 21528169344472027<17> × 46194618816084982100679234312974236345786346173<47> × 32198046775720891593420454244946597764673353202694265726843479376953223792923910764829129134957786957553803<107> |