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-   -   Found a factor, sunshine? Embalm and entomb it here! (RU "Выкрасить и выбросить")) (https://www.mersenneforum.org/showthread.php?t=13977)

petrw1 2022-03-09 02:42

Lord Julius vs. TJAOI
 
I'm surprised that Lord Julius is finding so many TF1-61 factors when I was of the understanding that TJAOI systematically churned through every exponent and every bit level up to 67.

James Heinrich 2022-03-09 04:32

[QUOTE=petrw1;601358]I'm surprised that Lord Julius is finding so many TF1-61 factors when I was of the understanding that TJAOI systematically churned through every exponent and every bit level up to 67.[/QUOTE]Can you point to an example(s) of a *new* factor that LJ found?

petrw1 2022-03-09 05:11

[QUOTE=James Heinrich;601365]Can you point to an example(s) of a *new* factor that LJ found?[/QUOTE]

My bad. Never mind.
I thought only new factors were reported.

LordJulius 2022-03-09 07:28

[QUOTE=petrw1;601366]My bad. Never mind.
I thought only new factors were reported.[/QUOTE]


Yep, quirk of how the system is coded/defined, but not doing GIMPS stuff for stats or credits.
Been going after TF gaps sporadically before, but with the new TF gap list making it easy to feed mfaktc just started at 100,000 and headed up!

James Heinrich 2022-03-09 16:25

[QUOTE=petrw1;601366]I thought only new factors were reported.[/QUOTE]Yeah, the "recently cleared" report shows factor results even if they're not new. You can see on my [URL="https://www.mersenne.ca/recentfactors.php"]New Recent Factors[/URL] page that no factors <68 bits have been found this year.

techn1ciaN 2022-03-11 06:38

M[M]109031903[/M] has a 168-bit composite factor: 363837089775240211801734278322914708564840813653583 (183216050087127739855367 78 bits * 1985836336948748649699241849 91 bits).

My first composite P-1 score. Interestingly, the full composite factor could have still have been found with just B2 = B1 = 75,000; the 91-bit component could even have been found with B2 = B1 = 20,000.

lycorn 2022-03-11 10:16

Speaking of composite factors, I found this beauty some days ago:

UID: lycorn/supernova, M13651679 has a factor: 3472625743771127990613030299559770254509858718433711042922231204290885145343 (P-1, B1=1350000, B2=3789310980)

[B]250.941[/B] bits. And:

Composite factor 3472625743771127990613030299559770254509858718433711042922231204290885145343 can be split into:
503052987459241976394793
1034412296803300959988489
6673452496002985441495464559

It´s the largest factor I´ve ever found , and the first time I find a composite factor that can be split in 3 factors

James Heinrich 2022-03-11 12:07

[QUOTE=lycorn;601499]It´s the largest factor I´ve ever found , and the first time I find a composite factor that can be split in 3 factors[/QUOTE]Congrats!

Strangely I noticed yesterday that [i]masser[/i] found this:[quote][M]M27893851[/M] has a 249.057-bit (75-digit) [b]composite[/b] (P23+P25+P28) factor: (P-1,B1=200000,B2=49465920)
[url=https://www.mersenne.ca/M27893851]941344976147070466133432421660342333953351560323526566733652692476498510073[/url][/quote]Very similar to yours (but [i]slightly[/i] smaller).

storm5510 2022-03-11 15:39

[QUOTE]M155999197 has a factor: 53236981495334776332913 [TF:74:77:mfaktc 0.21 barrett77_mul32_gs][/QUOTE]

It is not much, but it is something.

mrh 2022-03-11 16:56

[M]M109080229[/M] has a 175.051-bit (53-digit) [b]composite[/b] (P24+P30) factor: [url=https://www.mersenne.ca/M109080229]49601681225870900572877780170741524727555462264509913[/url] (P-1,B1=818000,B2=35245000)

Luminescence 2022-03-13 18:07

[M]M15122501[/M] has a factor: 19417184783570704930702131492084799775494055312713 (50 digits, 163.732 bits)

Nice. Huge one.


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