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FW: [PrimeNumbers] Prime Question

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  • Harvey, Steven
    After checking Reisel s page I found 26459 & 164987 which are the only other prime ns under 191600. http://www.prothsearch.net/riesel2.html ... [Non-text
    Message 1 of 1 , Feb 1, 2001
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      After checking Reisel's page I found 26459 & 164987 which are the only other
      prime ns under 191600.

      http://www.prothsearch.net/riesel2.html
      > -----Original Message-----
      > From: Harvey, Steven
      > Sent: Thursday, February 01, 2001 2:15 PM
      > To: 'paulmillscv@...'
      > Subject: RE: [PrimeNumbers] Prime Question
      >
      > I have 3*2^7559-1 is prime & 7559 is prime.
      >
      > sharvey@... stevenharvey@...
      >
      >
      >
      > -----Original Message-----
      > From: paulmillscv@... [SMTP:paulmillscv@...]
      > Sent: Thursday, February 01, 2001 11:33 AM
      > To: primenumbers@yahoogroups.com
      > Subject: [PrimeNumbers] Prime Question
      >
      > Hi to all,
      > By popular request, a new Yahoo Groups number. This one could be
      > BIG.
      > It is 3*2^n -1 n is prime. Note a certain similarity to the
      > one and only 2^n -1 (Mersenne). Note also the 3,2,1. So here are
      > the first 3Mn numbers of note.
      >
      > (To start the first one for any n is 3*2^18 +- 1 A twin pair!)
      > Then the first 3Mn is 3*2^43 -1 then n=103 and the record stands
      > at n=827
      > Yes, 3*2^827 -1 is prime.
      >
      > Let's give a big hand to Proth and NewPGen courtesy of Gallot and
      > Jobling. (I knew it had to be easier to find titans) If you can't
      > beat them join them. So here are my first 2 titans
      > 3*2^4204 -1 (1267 digits) and 3*2^5134 - 1. (1546 digits)
      >
      > Not an ounce of theory so far!
      > Also, can we stand back and appreciate just what Proth and NewPGen
      > have accomplished? In a few seconds (OK, 10 seconds) Proth/NewPGen
      > have found a 3Mn (n = 827) which is not a million miles away from
      > Mn . It took all of us until 1952 (Robinson) to find 2^607 - 1. I
      > mean, this is PROGRESS! I think I can wait another 10 years and
      > type in 2^10^9 - 1 to find (is PRIME!?) in just a few seconds. I
      > can't wait!
      >
      > OK, so here is the puzzle of the moment. Can anyone improve on
      > n=827 n must be prime. I haven't checked the range n= 5000 - 10000
      > so go for it!
      >
      > Regards,
      > Paul Mills
      > England
      >
      >
      >
      >
      >
      > Unsubscribe by an email to: primenumbers-unsubscribe@egroups.com
      > The Prime Pages : http://www.primepages.org
      >
      >


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