Holy new Mersenne prime, Batman! (M47 related) - Page 10

Jean Penné · 2008-08-26, 17:44

Good luck, GIMPS !!
Jean

biwema · 2008-08-26, 17:58

my encrypted guess: 4171145172577757__

ixfd64 · 2008-08-26, 18:30

Quote:

Originally Posted by ATH

So it sounds like jrk and me are verifying a fake exponent where fake algorithm residue were placed on.

At least the work isn't totally wasted, because one of you would get credited for double-checking.

whilden · 2008-08-26, 19:16

Quote:

Originally Posted by Jeff Gilchrist

That is what I am assuming, he has his fast code and access to fast systems now. I will probably just end up being the verification double-check.

Jeff Stop over in Ars #distributed

cheesehead · 2008-08-26, 19:21

Quote:

Originally Posted by ixfd64

At least the work isn't totally wasted, because one of you would get credited for double-checking.

GIMPS is generous; both would get credit.

(Dunno about PrimeNet credit, though.)

tha · 2008-08-26, 19:50

Quote:

Originally Posted by Batalov

Pssst... Just don't tell anyone. Especially whoever synchronizes V4->V5.
Just wait and it will show in the "P" column.

Fake! The numbers in all the columns haven't changed much over the last three weeks and neither in your attachment. Therefore there has not been a sync in either since the day George returned or the Mersenne Prime was reported to the server.

patrik · 2008-08-26, 21:11

Quote:

Originally Posted by Mini-Geek

Is it ~21M, as I kind of suggested in my last post? Just wondering, considering we both came up with four suspects at some point (three, four, depending on if you count the one with the fake residue).

There were three double-checks returned during hour 07 of August 23, 2008.

Code:

19825909  67  D  0x6C5F679CF11DAD__                23-Aug-08 07:11  PennyBlkP      PennyBlk_S1
20623513  67  D  0xF685AD4A0C9134__                23-Aug-08 07:35  WileECoyote    TimB21-1a
21087943  67  D  0xC75D8B55B1D1B7__                23-Aug-08 07:58  DarekM         DAREKM20

I happened to have copies of cleared.txt when the first test of 20623513 and 21087943 were returned, and the non-masked parts of the residues match. I am missing the cleared.txt from when 19825909 was first returned.

Furthermore, I can confirm that "Prime UNVERIFIED" first occurred in the report from 08:00 UT.

Code:

Status Summary Report 23 Aug 2008 07:00 (23 Aug 2008 00:00 Pacific)
[---]
                  ------- Mersenne Exponent Test State -------

      Assigned in Tests                 Cleared Since Last Synchronization

  Factoring only        :   8963          Factored composite    :    798
  Lucas-Lehmer testing  :  73207          Lucas-Lehmer composite:   4375
  Double-checking LL    :   9387          Double-checked LL     :   1596
  ---------------------- -------          ---------------------- -------
                  TOTAL :  91557                          TOTAL :   6769

Code:

Status Summary Report 23 Aug 2008 08:00 (23 Aug 2008 01:00 Pacific)
[---]
                  ------- Mersenne Exponent Test State -------

      Assigned in Tests                 Cleared Since Last Synchronization

  Factoring only        :   8967          Factored composite    :    798
  Lucas-Lehmer testing  :  73223          Lucas-Lehmer composite:   4391
  Double-checking LL    :   9388          Double-checked LL     :   1599
                                          Prime, UNVERIFIED     :      1
  ---------------------- -------          ---------------------- -------
                  TOTAL :  91578                          TOTAL :   6789

Kevin · 2008-08-26, 21:28

Quote:

Originally Posted by patrik

I am missing the cleared.txt from when 19825909 was first returned.

http://v5www.mersenne.org/report_exp...&B1=Get+status

Code:

19825909	No factors below	2^66
	P-1	B1=230000, B2=3967500
	Unverified LL	6C5F679CF11DAD__ by "Brian Glover"

It's a match.

Mini-Geek · 2008-08-26, 21:33

Well, nice to see the 07:00 and 08:00 reports so we know for sure that it was during that hour, but I'm pretty sure when I put down ~21M I meant to put down ~28M, which is the same value philmoore suggested (closer to 29M actually). It's a first-time test.

I have a question to George, Scott (that's the name of the one that runs the server right?), and whoever else might be in the know...why intentionally hide a new prime from the community? I can understand wanting to not release it as a press release and have the news spread everywhere before a verification is done (and then potentially have to retract your statement), but can't you still let us know what it is? Perhaps to try to let us know it but not the general press/news/public, you could just go back to the old residue generator and put it on the real prime, and not allow us to explicitly state the new exponent on the forums. Or maybe have an expanded list of people to get the news that has the number of the prime.

ATH · 2008-08-26, 22:00

If the one with algorithm residue is fake like we think now, I think its the LL that was turned in just few min before the fake one. Server probably setup so that if it get a zero residue it put a fake on the next LL turned in.

biwema · 2008-08-26, 22:16

it makes sense, that the fake residue is put on a number which is returned in the same hour as the new prime. That happene also here. That way it dies not happen, that the residue of the fake prime changes between two hourly reports.

At least we have a 11/13 (or even 12/13) chance that the prime has 10 million digits.

2008-08-26, 17:44	#100
Jean Penné May 2004 FRANCE 244₁₆ Posts	Good luck, GIMPS! Good luck, GIMPS !! Jean

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2008-08-26, 17:58	#101
biwema Mar 2004 381₁₀ Posts	my encrypted guess: 4171145172577757__

2008-08-26, 21:33	#108
Mini-Geek Account Deleted "Tim Sorbera" Aug 2006 San Antonio, TX USA 17×251 Posts	Well, nice to see the 07:00 and 08:00 reports so we know for sure that it was during that hour, but I'm pretty sure when I put down ~21M I meant to put down ~28M, which is the same value philmoore suggested (closer to 29M actually). It's a first-time test. I have a question to George, Scott (that's the name of the one that runs the server right?), and whoever else might be in the know...why intentionally hide a new prime from the community? I can understand wanting to not release it as a press release and have the news spread everywhere before a verification is done (and then potentially have to retract your statement), but can't you still let us know what it is? Perhaps to try to let us know it but not the general press/news/public, you could just go back to the old residue generator and put it on the real prime, and not allow us to explicitly state the new exponent on the forums. Or maybe have an expanded list of people to get the news that has the number of the prime.

2008-08-26, 22:00	#109
ATH Einyen Dec 2003 Denmark 3⁵·13 Posts	If the one with algorithm residue is fake like we think now, I think its the LL that was turned in just few min before the fake one. Server probably setup so that if it get a zero residue it put a fake on the next LL turned in.

2008-08-26, 22:16	#110
biwema Mar 2004 17D₁₆ Posts	it makes sense, that the fake residue is put on a number which is returned in the same hour as the new prime. That happene also here. That way it dies not happen, that the residue of the fake prime changes between two hourly reports. At least we have a 11/13 (or even 12/13) chance that the prime has 10 million digits.