99999...99991 (199-digits)
This number is a prime.
999999999 9999999999 9999999999 9999999999 9999999999 9999999999
9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 9999999999
9999999999 9999999999 9999999999 9999999999 9999999999 9999999999 9999999991
The smallest prime starting with 99 occurrences of "99" is
the near-repdigit prime 10^199-9 = 9...91, which is also
the largest prime with 199 digits. [Hasler]
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