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 2003-12-11, 19:16 #1 tjmag   Dec 2003 3 Posts prime number formula The result of 2, raised to the power of a prime number, less 1 equals another prime number. There is always one larger.
 2003-12-11, 19:32 #2 Prime Monster     Aug 2002 22·5·13 Posts Not absolutely correct. The vast majority of them do not generate prime numbers. That is why we have found only 40 of them so far, even though we have been at it for a fairly long time.... PM
 2003-12-11, 19:36 #3 Xyzzy     Aug 2002 2×7×13×47 Posts 11 is prime... 211-1 = 2047 2047 = 23 × 89
 2003-12-11, 19:52 #4 tjmag   Dec 2003 3 Posts prime number formula http://www.utm.edu/research/primes/l...mall/10000.txt there are over 10,000 primes. pi(x) = the number of primes less than or equal to x. There are only 39 known Mersenne primes ... http://www.pen.k12.va.us/Div/Winches...cts/prime.html However, even that appears to follow the aforemetioned formula.
 2003-12-11, 19:56 #5 tjmag   Dec 2003 3 Posts 11 good catch true.
 2003-12-11, 19:58 #6 Prime Monster     Aug 2002 22×5×13 Posts The Mersenne primes follow the 2P-1 where P is a prime. The GIMPS project is more or less systematically testing primes to see if they will generate a new Mersenne prime. PM
 2003-12-11, 20:21 #7 Unregistered   4,493 Posts Thanks. Thanks.

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