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  • Ok, now you have me thinking outside of “lurk mode” about the largest known primes and the following question: For lack of better terminology at this point, I’ll define MLP(n)+1 as the first n primes multiplied together plus one and the question comes to mind as to how often that number is composite? The question is inspired from the proof of infinite primes where if the...
    James J Youlton Jr Feb 5, 2013
  • I’m a bit lazy at the moment to do a proper search on this topic, so if anyone already knows the answer, please chime in. the primes, written in binary, all have the first bit set to one and the last bit set to one except for the first prime “2”. what about the bits in the middle? is there a listing anywhere of the frequency of 1’s and 0’s of the inner bits? with analysis...
    James J Youlton Jr Aug 29, 2012
  • While I'm here, I'd like to invite everyone to participate in an online prime search contest. The contest "Tribal Primes" at http://www.v-sonline.com/index.pl?C4 has been running for about 12 days now and it's turning out that one of the lower parts has become an exciting search for an optimal sequence of primes. The contest description is as follows: Your task is to find a lists...
    James J Youlton Jr Nov 12, 2009
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  • Oh my, what a disappointment. I thought for sure they would have a name. Perhaps we can name them? Three possibilities among many occur to me: "Unidigital Primes", "Monodigital Primes", or "Solodigital Primes". I'm making a puzzle contest and I'm looking for a name to call them if one exists or can be named. James ----- Original Message ----- From: Jens Kruse Andersen To...
    James J Youlton Jr Nov 12, 2009
  • A quick question if I may. If a prime number does not have the same digit occuring within it more than once, what is that number called (and yes I know there are a finite number of them all being < 10**9). Example, 97 is such a number but 101 is not. Thanks in advance, James [Non-text portions of this message have been removed]
    James J Youlton Jr Nov 12, 2009
  • Hi all, a notion occurred to me that has probably been explored, so I'm looking for references to it. Of the numbers n# +1 or n# -1 (n Primorial plus 1, or minus 1), is there a list of such numbers that are prime, and do these numbers have a name? I don't know where to start on this one. Cheers, James [Non-text portions of this message have been removed]
    James J Youlton Jr Oct 27, 2009