Welcome, Again, to the Nostradamus Server!

I am impressed! Your guess that my number begins with 813197839 was exactly right!
What do you guess are the next two digits of my number?
81319783900
81319783901
81319783902
81319783903
81319783904
81319783905
81319783906
81319783907
81319783908
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81319783939
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81319783944
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81319783990
81319783991
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81319783994
81319783995
81319783996
81319783997
81319783998
81319783999