mersenneforum.org Any way to run trial factoring on a SPECIFIC Exponent?
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2022-01-24, 18:58   #23
kriesel

"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest

646510 Posts

Quote:
 Originally Posted by IndrajithGamage seems like it's taking more than a year and a half (524 days) to complete with my PC.
Hmm, 524/365.2425 ~1.4346... years x 12 ~17.2 months < 18 months = 1.5 years ~ 547.86 days. I guess my Windows Calculator must have a bug. And so apparently does https://www.timeanddate.com/date/dur...&y2=2023&ti=on
I'm using the Gregorian Calendar which averages 365.2425 (solar) days/year on 400 years. For 524 days > 1.5 years, the year length would need to be no more than ~349.3 days, quite a discrepancy at over 4.5% for someone who claims a BS in mathematics. No other planet in this system has a year ~0.955 earth years long.

Quote:
 Originally Posted by Dr Sardonicus you'll just say "It must be a mistake."
Or, "oops, it was a typo, I meant M348989999". (which has only been TF to 73 bits so far, no P-1). Or some such switch. Maybe those who make such unfounded claims of primes could be confined to a subforum of dubious claim threads to fight over who's more wrong and why?

Last fiddled with by kriesel on 2022-01-24 at 19:28

2022-01-24, 23:13   #24
Dr Sardonicus

Feb 2017
Nowhere

2×5×577 Posts

(my emphasis)
Quote:
 Originally Posted by IndrajithGamage I'm running it but seems like it's taking more than a year and a half (524 days) to complete with my PC. (still at 0.2%)
Hmm, the exponent status report says
Quote:
 Assigned 2021-12-23 User Indrajith_Gamage Work Type PRP test Stage PRP % Done 0.1 % Updated 2022-01-24

2022-01-25, 00:32   #25
kriesel

"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest

3·5·431 Posts

Quote:
 Originally Posted by Dr Sardonicus (my emphasis)Hmm, the exponent status report says
It gets worse.
524days/100% (or 99.8 or 99.9%) is 0.19%/day. He's had it 32 days (2021-12-23 to 2022-01-24).
32 x 0.19% = 6.1% not 0.1%. (Perhaps he paused it a month ago, and left it that way?!)

If he's only run it for about a half day total, the server will round to the nearest tenth of a percent and display 0.1%. It also does that on the private assignments page per userid, although there it will display empty hundredths precision, 0.10%. The individual exponent report rounds to the nearest 0.1%. I confirmed that just now with a cert I paused and updated the server for, and then refreshed my assignments page and checked the individual exponent report. (And "Test/Continue" afterward, to resume making progress on the Cert.)

I note also that these return no LL tests completed, and no PRP tests completed, respectively, for the same user id:
https://www.mersenne.org/report_ll/?...ith_Gamage&B1=
https://www.mersenne.org/report_prp/...ith_Gamage&B1=
Not even one measly wavefront LL DC, or PRP with proof as double check to check the reliability of his hardware before embarking on a years-long test.
Nor even a blindingly fast PRP-CF:
https://www.mersenne.org/report_prpc...dispdate=1&B1=

I suggest that if there is not a reasonable amount of progress made, within another month, from now, on this or some other less ambitious assignment for him, that a PrimeNet server admin revoke the assignment(s), and consider whether someone who has done nothing but squat on an exponent for a month or two after having contributed no useful results and demonstrated no intent to qualify his hardware or make progress toward completion of the assignment(s), ought be blocked from obtaining further GIMPS assignments to squat idly upon. I leave it to the forum mods to decide what action is appropriate on the forum side.

My bad; inline edits within the quote.
Quote:
 Originally Posted by kriesel Since it is reporting progress, it is likely prime95. Since it has reported 0.2% 0.1%, it has may have already passed the point where there would either be a first power 9 10 proof residue saved, or not. (1/29 ~ 0.195%; 2-10 ~0.0977%). If the system is not yet set for adequate temporary space, that could be corrected soon and still enable proof power 8 9. If it was left at default settings, much lower maximum proof power would be allowed by a small power proof, and as a result much more work would be necessary eventually to certify or double check the run. About 25. GB of temporary space would be required for proof power 9 on ~385M exponent. See the CONTROLLING RESOURCE USAGE section of prime95's readme.txt and linearly extrapolate temporary space for exponent.
In this exponent range proof power 10 is optimal, and power 9 would be acceptable.

Last fiddled with by kriesel on 2022-01-25 at 01:08

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