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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)

Happy5214 2021-08-30 08:23

[QUOTE=Happy5214;586838]M[M]5211229[/M] gave me a 114.058-bit P-1 factor (21623513459060090628814036845352337) (an all-time personal best by almost 8 bits) [I]and[/I] a separate 90.559-bit stage 1 P+1 factor (1824415976895261507796344041).[/QUOTE]

Those were both logged in the 2 PM local (America/Chicago) hour Sunday, while I was sleeping (I didn't wake up until after 7 PM local Sunday night). Less than 11 hours later, just after 1 AM local Monday, I beat my personal best again:

275190978175938200476768961501749313 for M[M]5211289[/M] (B1=2,500,000, B2=240,000,000) (117.728 bits)

Sadly, no bonus P+1 hit for this one.

firejuggler 2021-09-09 17:08

[M]M6282557[/M] has a 112.036-bit (34-digit) factor: [url=https://www.mersenne.ca/M6282557]5324115842154238964583982961636201[/url] (P-1,B1=3000000,B2=90000000)


Quite nice one, and first found in that range for me.

James Heinrich 2021-09-12 14:29

My CPUs have mostly been busy doing other stuff for months, so I was mildly excited to see my first P-1 factor since June:
[M]M105233789[/M] has a 92.789-bit (28-digit) factor: [url=https://www.mersenne.ca/M105233789]8554126736286122188536749441[/url] (P-1,B1=820000,B2=34707000)
Only to discover it had been lingering in worktodo for too long and had apparently expired and someone else found the factor two weeks ago. :picard:

birtwistlecaleb 2021-09-21 21:54

My list of factors for numbers in the 200 million digit range (M7593XXXXX to be specific)
 
Disclaimer: You may not see these in mersenne.ca, but this is probably because I self assigned them.
[URL="https://www.mersenne.org/report_exponent/?exp_lo=759376643&full=1"]M759376643[/URL] factor: 14247797623131731084353
[URL="https://www.mersenne.org/report_exponent/?exp_lo=759376729&full=1"]M759376729[/URL] factor: 4094254204485992428199
[URL="https://www.mersenne.org/report_exponent/?exp_lo=759376843&full=1"]M759376843[/URL] factor: 3509297005626164059583
______________________________________________________________________________________________________
:google:

Uncwilly 2021-09-21 22:22

[QUOTE=birtwistlecaleb;588367]Disclaimer: You may not see these in mersenne.ca, but this is probably because I self assigned them.[/QUOTE]Wait 24 hours and they should show up on mersenne.ca It does its data pull overnight in the US o A.
(They are there now.)

birtwistlecaleb 2021-09-21 23:01

[QUOTE=Uncwilly;588368]Wait 24 hours and they should show up on mersenne.ca It does its data pull overnight in the US o A.
(They are there now.)[/QUOTE]
Ah, didn't know. Can you edit my message? (And add that there will be 1,830,XXX,XXX numbers too)

James Heinrich 2021-09-21 23:32

[QUOTE=birtwistlecaleb;588367]You may not see these in mersenne.ca, but this is probably because I self assigned them[/QUOTE]Everything on mersenne.org should show up on mersenne.ca, albeit after a delay of up to 24.5h -- new [i]factors[/i] are pulled in every hour (from [URL="https://www.mersenne.org/report_recent_cleared/"]recent cleared report[/URL]), whereas the detailed work information (who what when how) is pulled in every night about 00:30h UTC.

A related warning: exponent pages on mersenne.ca are heavily cached, if you look at the page after the factor is discovered but before the full nightly sync, subsequent page views may not show the full details, but Ctrl-F5 forcible refresh will fix that.

[url]https://www.mersenne.ca/json2bbcode.php[/url] may be useful to you in formatting results to post in this thread with automatic linking to both mersenne.org and mersenne.ca (and bit size).

James Heinrich 2021-09-25 00:10

Dylan found a nice composite:
[M]M4900289[/M] has a 197.901-bit (60-digit) [b]composite[/b] (P30+P31) factor: [url=https://www.mersenne.ca/M4900289]375214712823873127465912884273993479895231432491081329619849[/url] (P-1,B1=2350000,B2=213850000)

tha 2021-09-26 18:27

Today, for the first time ever, my machine found a composite factor composed of three factors, of an exponent trial factored to 71 bits:

[URL="https://www.mersenne.ca/exponent/9141029"]https://www.mersenne.ca/exponent/9141029[/URL]

Just before, in the morning it found a 114 bits factor ranking 12th in my personal top 500 and two hours later a regular 92 bits factor.

James Heinrich 2021-09-26 19:20

[QUOTE=tha;588759]a composite factor composed of three factors[/quote]A rare find! :whee:

[M]M9141029[/M] has a 245.684-bit (74-digit) [b]composite[/b] (P23+P24+P28) factor: [url=https://www.mersenne.ca/M9141029]90805179079635333458558529873927662467378423913017841891392559441607383569[/url] (P-1,B1=2000000,B2=146000000)

Jwb52z 2021-09-26 19:45

P-1 found a factor in stage #1, B1=763000.
UID: Jwb52z/Clay, M106358779 has a factor: 282917789511750372931085031635362975391 (P-1, B1=763000),

I think this might be my biggest factor, ever!

127.734 bits!


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