mersenneforum.org What difference between these two 10m digit exponents?
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 2003-01-17, 23:38 #1 Deviator   Oct 2002 78 Posts What difference between these two 10m digit exponents? What does the "F" mean in the first exponent (33274547), Finished/Failed? And the second one, did I find anything interesting? "Factored composite : 1", "Lucas-Lehmer composite: 1" I thought I checked two 10 million digit exponents, but it seems they were different somehow. Clarify, but don't spend too much time explaining :) ------- Exponents Cleared since last Synchronization ------- prime fact Lucas-Lehmer residue or factor exponent bits [residues partially masked] date returned computer ID -------- ---- -- -------------------------------- --------------- ------------ 33274547 64 F 25826112880680091961 15-Apr-02 06:35 **** 33353669 69 0x45B178D032C5DB__ 16-Jan-03 19:36 **** Factored composite : 1 Lucas-Lehmer composite: 1 Double-checked LL : 0 ---------------------- ------- TOTAL : 2 I thank you for a possible answer /Johan
 2003-01-17, 23:52 #2 Prime95 P90 years forever!     Aug 2002 Yeehaw, FL 2·5·743 Posts F means factored
 2003-01-18, 21:07 #3 lycorn     Sep 2002 Oeiras, Portugal 145210 Posts As George said, F means factored, which means you have found a factor of the first number. There was no need to perform the LL test. The second result was obtained at the end of the LL test: it is the "residue" computed in the last iteration. If, instead of the value obtained, the residue was 0, you would have found the first 10M+ Mersenne Number
2003-01-19, 07:50   #4
cheesehead

"Richard B. Woods"
Aug 2002
Wisconsin USA

22·3·641 Posts

Quote:
 Originally Posted by Deviator What does the "F" mean in the first exponent (33274547), Finished/Failed?
There's an explanation of report codes (*,F,D,P) at http://mersenne.org/ips/accounts.html under the subheading "Internet PrimeNet Server Individual Account Report". Look at the four paragraphs just below the line on which "PrimeNet UserID" and "Password" are requested.

This explanation is not particularly easy to find, though the Internet PrimeNet Server page at http://mersenne.org/primenet/ has a link to that page in the sentence "For a complete legend of report symbols and meanings, please see the Individual Account Reports page."

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