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Old 2015-10-14, 13:58   #32
davar55
 
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May 2004
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Quote:
Originally Posted by alpertron View Post
At this point he should feel like a sheep surrounded by wolves. I do not think he wants to continue discussing here.
Regarding your example, expanding the polynomial x^2 + x + 41.

Is there any way to PROOVE this is prime for
all integers x between 0 and 39 inclusive,
without actually testing or enumerating the range?

In other words, is this interesting fact unique or
the first of a sequence of such polynomials with
all values prime within a significant range?

That would be a nice puzzle to ask in this thread.
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