[ May 21, 2007 ]
Let 10n+x be the smallest PRP (prime) past 10n
Then f(n) = xy and F(n) = sum f(m) for m = 1 to n
F(n) is negative for values of n in the first set of brackets,
F(n) remains negative for after n = 2652
[2653,*] where * at 4999 the sum is -653126
The conjecture is that it is always negative thereafter.
Also, Milton provides some graphs for handy visualisation,
They show the decrease into 1000 unit steps.
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