20030117, 23:38  #1 
Oct 2002
7_{8} 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", "LucasLehmer 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 LucasLehmer residue or factor exponent bits [residues partially masked] date returned computer ID       33274547 64 F 25826112880680091961 15Apr02 06:35 **** 33353669 69 0x45B178D032C5DB__ 16Jan03 19:36 **** Factored composite : 1 LucasLehmer composite: 1 Doublechecked LL : 0   TOTAL : 2 I thank you for a possible answer /Johan 
20030117, 23:52  #2 
P90 years forever!
Aug 2002
Yeehaw, FL
2·5·743 Posts 
F means factored

20030118, 21:07  #3 
Sep 2002
Oeiras, Portugal
1452_{10} 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 
20030119, 07:50  #4  
"Richard B. Woods"
Aug 2002
Wisconsin USA
2^{2}·3·641 Posts 
Quote:
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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